http://gemologyproject.com/wiki/index.php?title=Rock_Crystal&feed=atom&action=historyRock Crystal - Revision history2024-03-28T10:49:25ZRevision history for this page on the wikiMediaWiki 1.28.0http://gemologyproject.com/wiki/index.php?title=Rock_Crystal&diff=9300&oldid=prevBarbra: /* Inclusions in Quartz: Click on Image for full Size */2010-03-09T21:12:58Z<p><span dir="auto"><span class="autocomment">Inclusions in Quartz: Click on Image for full Size</span></span></p>
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<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>==Inclusions in Quartz: Click on Image for full Size==</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>==Inclusions in Quartz: Click on Image for full Size==</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">[[Image:Brookite_quartz.jpg |thumb|left|250px|A blade of brookite which has acted as a nuclei for a dramatic outgrowth of rutile. Also present, coiled ripidolite aggregates]]  [[Image:Rutile_quartz.jpg|thumb|left|250px|A star of rutile in quartz from Minas Gerais, Brazil<br /> 20X magnification]]</del></div></td><td colspan="2"> </td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"><br clear="all" /></del></div></td><td colspan="2"> </td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[[image:Rutile_in_quartz02.jpg|thumb|left|250px|Acicular inclusions in quartz, possibly rutile.<br />Photo courtesy of Conny Forsberg]]</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[[image:Rutile_in_quartz02.jpg|thumb|left|250px|Acicular inclusions in quartz, possibly rutile.<br />Photo courtesy of Conny Forsberg]]</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[[image:Herkimer_inclusion_in_quartz.jpg|thumb|left|250px|Doubly terminated Quartz crystal in quartz. Often referred to as Herkimer Diamond, it is actually a location and habit specific variety of colorless quartz. <br />Photo courtesy of James Swisher]]</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[[image:Herkimer_inclusion_in_quartz.jpg|thumb|left|250px|Doubly terminated Quartz crystal in quartz. Often referred to as Herkimer Diamond, it is actually a location and habit specific variety of colorless quartz. <br />Photo courtesy of James Swisher]]</div></td></tr>
</table>Barbrahttp://gemologyproject.com/wiki/index.php?title=Rock_Crystal&diff=9285&oldid=prevBarbra: /* Inclusions in Quartz: Click on Image for full Size */2010-03-09T02:07:42Z<p><span dir="auto"><span class="autocomment">Inclusions in Quartz: Click on Image for full Size</span></span></p>
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<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>==Inclusions in Quartz: Click on Image for full Size==</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>==Inclusions in Quartz: Click on Image for full Size==</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>[[Image:Brookite_quartz.jpg |thumb|left|250px|A blade of brookite which has acted as a nuclei for a dramatic outgrowth of rutile. Also present, coiled ripidolite aggregates]]</div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>[[Image:Brookite_quartz.jpg |thumb|left|250px|A blade of brookite which has acted as a nuclei for a dramatic outgrowth of rutile. Also present, coiled ripidolite aggregates<ins class="diffchange diffchange-inline">]]  [[Image:Rutile_quartz.jpg|thumb|left|250px|A star of rutile in quartz from Minas Gerais, Brazil<br /> 20X magnification</ins>]]</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div><br clear="all" /></div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div><br clear="all" /></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[[image:Rutile_in_quartz02.jpg|thumb|left|250px|Acicular inclusions in quartz, possibly rutile.<br />Photo courtesy of Conny Forsberg]]</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[[image:Rutile_in_quartz02.jpg|thumb|left|250px|Acicular inclusions in quartz, possibly rutile.<br />Photo courtesy of Conny Forsberg]]</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[[image:Herkimer_inclusion_in_quartz.jpg|thumb|left|250px|Doubly terminated Quartz crystal in quartz. Often referred to as Herkimer Diamond, it is actually a location and habit specific variety of colorless quartz. <br />Photo courtesy of James Swisher]]</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[[image:Herkimer_inclusion_in_quartz.jpg|thumb|left|250px|Doubly terminated Quartz crystal in quartz. Often referred to as Herkimer Diamond, it is actually a location and habit specific variety of colorless quartz. <br />Photo courtesy of James Swisher]]</div></td></tr>
</table>Barbrahttp://gemologyproject.com/wiki/index.php?title=Rock_Crystal&diff=9283&oldid=prevBarbra: /* Inclusions in Quartz: Click on Image for full Size */2010-03-09T02:02:56Z<p><span dir="auto"><span class="autocomment">Inclusions in Quartz: Click on Image for full Size</span></span></p>
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<td colspan='2' style="background-color: white; color:black; text-align: center;">Revision as of 02:02, 9 March 2010</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l7" >Line 7:</td>
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<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>Crystal balls were brought to Europe from the Near East by the Crusaders. They were credited with the ability to cure diseases. In Scotland and Ireland, farmers used crystal balls to keep livestock healthy.  Today, crystal balls are still used for mystical divination, gazing and New Age healing. They vary in size ranging from small beads measuring a few millimeters in diameter to the largest known crystal ball in existence.  It is displayed at the Smithsonian Institution in Washington, D.C.  It is called the "Warner Crystal Ball." This specimen has a weight of 48.5 kilograms and a diameter of 32.5 centimeters.  <br clear="left" /></div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>Crystal balls were brought to Europe from the Near East by the Crusaders. They were credited with the ability to cure diseases. In Scotland and Ireland, farmers used crystal balls to keep livestock healthy.  Today, crystal balls are still used for mystical divination, gazing and New Age healing. They vary in size ranging from small beads measuring a few millimeters in diameter to the largest known crystal ball in existence.  It is displayed at the Smithsonian Institution in Washington, D.C.  It is called the "Warner Crystal Ball." This specimen has a weight of 48.5 kilograms and a diameter of 32.5 centimeters.  <br clear="left" /></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>==Inclusions in Quartz: Click on Image for full Size==</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>==Inclusions in Quartz: Click on Image for full Size==</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">[[Image:Brookite_quartz.jpg |thumb|left|250px|A blade of brookite which has acted as a nuclei for a dramatic outgrowth of rutile. Also present, coiled ripidolite aggregates]]</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"><br clear="all" /></ins></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[[image:Rutile_in_quartz02.jpg|thumb|left|250px|Acicular inclusions in quartz, possibly rutile.<br />Photo courtesy of Conny Forsberg]]</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[[image:Rutile_in_quartz02.jpg|thumb|left|250px|Acicular inclusions in quartz, possibly rutile.<br />Photo courtesy of Conny Forsberg]]</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[[image:Herkimer_inclusion_in_quartz.jpg|thumb|left|250px|Doubly terminated Quartz crystal in quartz. Often referred to as Herkimer Diamond, it is actually a location and habit specific variety of colorless quartz. <br />Photo courtesy of James Swisher]]</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[[image:Herkimer_inclusion_in_quartz.jpg|thumb|left|250px|Doubly terminated Quartz crystal in quartz. Often referred to as Herkimer Diamond, it is actually a location and habit specific variety of colorless quartz. <br />Photo courtesy of James Swisher]]</div></td></tr>
</table>Barbrahttp://gemologyproject.com/wiki/index.php?title=Rock_Crystal&diff=8019&oldid=prevBarbra: /* Inclusions in Quartz: Click on Image for full Size */2009-07-26T17:21:50Z<p><span dir="auto"><span class="autocomment">Inclusions in Quartz: Click on Image for full Size</span></span></p>
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<td colspan='2' style="background-color: white; color:black; text-align: center;">Revision as of 17:21, 26 July 2009</td>
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<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>==Inclusions in Quartz: Click on Image for full Size==</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>==Inclusions in Quartz: Click on Image for full Size==</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[[image:Rutile_in_quartz02.jpg|thumb|left|250px|Acicular inclusions in quartz, possibly rutile.<br />Photo courtesy of Conny Forsberg]]</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[[image:Rutile_in_quartz02.jpg|thumb|left|250px|Acicular inclusions in quartz, possibly rutile.<br />Photo courtesy of Conny Forsberg]]</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">[[image:Herkimer_inclusion_in_quartz.jpg|thumb|left|250px|Doubly terminated Quartz crystal in quartz. Often referred to as Herkimer Diamond, it is actually a location and habit specific variety of colorless quartz. <br />Photo courtesy of James Swisher]]</ins></div></td></tr>
</table>Barbrahttp://gemologyproject.com/wiki/index.php?title=Rock_Crystal&diff=8017&oldid=prevBarbra at 16:53, 26 July 20092009-07-26T16:53:22Z<p></p>
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<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[[Image:Xl_ball.jpg|left|framed|70mm Crystal Ball]]  </div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[[Image:Xl_ball.jpg|left|framed|70mm Crystal Ball]]  </div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Crystal balls were brought to Europe from the Near East by the Crusaders. They were credited with the ability to cure diseases. In Scotland and Ireland, farmers used crystal balls to keep livestock healthy.  Today, crystal balls are still used for mystical divination, gazing and New Age healing. They vary in size ranging from small beads measuring a few millimeters in diameter to the largest known crystal ball in existence.  It is displayed at the Smithsonian Institution in Washington, D.C.  It is called the "Warner Crystal Ball." This specimen has a weight of 48.5 kilograms and a diameter of 32.5 centimeters.  <br></div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Crystal balls were brought to Europe from the Near East by the Crusaders. They were credited with the ability to cure diseases. In Scotland and Ireland, farmers used crystal balls to keep livestock healthy.  Today, crystal balls are still used for mystical divination, gazing and New Age healing. They vary in size ranging from small beads measuring a few millimeters in diameter to the largest known crystal ball in existence.  It is displayed at the Smithsonian Institution in Washington, D.C.  It is called the "Warner Crystal Ball." This specimen has a weight of 48.5 kilograms and a diameter of 32.5 centimeters.  <br <ins class="diffchange diffchange-inline">clear="left" /</ins>></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">==Inclusions in Quartz: Click on Image for full Size==</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">[[image:Rutile_in_quartz02.jpg|thumb|left|250px|Acicular inclusions in quartz, possibly rutile.<br />Photo courtesy of Conny Forsberg]]</ins></div></td></tr>
</table>Barbrahttp://gemologyproject.com/wiki/index.php?title=Rock_Crystal&diff=5521&oldid=prevDoos: <br>'s can be replaced by empty lines2007-01-22T17:35:38Z<p><br>'s can be replaced by empty lines</p>
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<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>{{Rock_Crystal}}</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>{{Rock_Crystal}}</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[[Image:rock_crystal.jpg|left|framed|Quartz crystals from the personal collection of Barbra Voltaire]] <br clear="left" /></div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[[Image:rock_crystal.jpg|left|framed|Quartz crystals from the personal collection of Barbra Voltaire]] <br clear="left" /></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Rock Crystal is the common name for colorless quartz. The material is abundant and has been used for centuries as a gem.  Quartz crystals are among the earliest talismans. Examples of rock crystal objects date back to 75,000BC. Every culture on the planet has attributed magical power to quartz crystals. The Ancient Greeks prized rock crystal and believed it to be water frozen by the gods to a state of perpetual solidity. They carved the material into seals and intaglios.  The Japanese considered it "the perfect jewel", symbolizing patience and perseverance, the infinity of space and purity. Native Americans used quartz crystals as a hunting talisman and "fed" them with deer's blood. <del class="diffchange diffchange-inline"><br><br><br><br></del></div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Rock Crystal is the common name for colorless quartz. The material is abundant and has been used for centuries as a gem.  Quartz crystals are among the earliest talismans. Examples of rock crystal objects date back to 75,000BC. Every culture on the planet has attributed magical power to quartz crystals. The Ancient Greeks prized rock crystal and believed it to be water frozen by the gods to a state of perpetual solidity. They carved the material into seals and intaglios.  The Japanese considered it "the perfect jewel", symbolizing patience and perseverance, the infinity of space and purity. Native Americans used quartz crystals as a hunting talisman and "fed" them with deer's blood.</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[[Image:Xl_ball.jpg|left|framed|70mm Crystal Ball]]  </div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[[Image:Xl_ball.jpg|left|framed|70mm Crystal Ball]]  </div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>Crystal balls were brought to Europe from the Near East by the Crusaders. They were credited with the ability to cure diseases. In Scotland and Ireland, farmers used crystal balls to keep livestock healthy.  Today, crystal balls are still used for mystical divination, gazing and New Age healing. They vary in size ranging from small beads measuring a few millimeters in diameter to the largest known crystal ball in existence.  It is displayed at the Smithsonian Institution in Washington, D.C.  It is called the "Warner Crystal Ball." This specimen has a weight of 48.5 kilograms and a diameter of 32.5 centimeters.  <br></div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>Crystal balls were brought to Europe from the Near East by the Crusaders. They were credited with the ability to cure diseases. In Scotland and Ireland, farmers used crystal balls to keep livestock healthy.  Today, crystal balls are still used for mystical divination, gazing and New Age healing. They vary in size ranging from small beads measuring a few millimeters in diameter to the largest known crystal ball in existence.  It is displayed at the Smithsonian Institution in Washington, D.C.  It is called the "Warner Crystal Ball." This specimen has a weight of 48.5 kilograms and a diameter of 32.5 centimeters.  <br></div></td></tr>
</table>Dooshttp://gemologyproject.com/wiki/index.php?title=Rock_Crystal&diff=5508&oldid=prevBarbra at 23:05, 21 January 20072007-01-21T23:05:05Z<p></p>
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<td colspan='2' style="background-color: white; color:black; text-align: center;">Revision as of 23:05, 21 January 2007</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >Line 1:</td>
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<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>{{Rock_Crystal}}</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>{{Rock_Crystal}}</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[[Image:rock_crystal.jpg|left|framed|Quartz crystals from the personal collection of Barbra Voltaire]] <br clear="left" /></div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[[Image:rock_crystal.jpg|left|framed|Quartz crystals from the personal collection of Barbra Voltaire]] <br clear="left" /></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Rock Crystal is the common name for colorless quartz. The material is abundant and has been used for centuries as a gem.  Quartz crystals are among the earliest talismans. Examples of rock crystal objects date back to 75,000BC. Every culture on the planet has attributed magical power to quartz crystals. The Ancient Greeks prized rock crystal and believed it to be water frozen by the gods to a state of perpetual solidity. They carved the material into seals and intaglios.  The Japanese considered it "the perfect jewel", symbolizing patience and perseverance, the infinity of space and purity. Native Americans used quartz crystals as a hunting talisman and "fed" them with deer's blood. <br></div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Rock Crystal is the common name for colorless quartz. The material is abundant and has been used for centuries as a gem.  Quartz crystals are among the earliest talismans. Examples of rock crystal objects date back to 75,000BC. Every culture on the planet has attributed magical power to quartz crystals. The Ancient Greeks prized rock crystal and believed it to be water frozen by the gods to a state of perpetual solidity. They carved the material into seals and intaglios.  The Japanese considered it "the perfect jewel", symbolizing patience and perseverance, the infinity of space and purity. Native Americans used quartz crystals as a hunting talisman and "fed" them with deer's blood. <ins class="diffchange diffchange-inline"><br><br><br></ins><br></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>[[Image:Xl_ball.jpg|left|framed|70mm Crystal Ball]] <del class="diffchange diffchange-inline"><br clear="left" /></del></div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>[[Image:Xl_ball.jpg|left|framed|70mm Crystal Ball]]  </div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>Crystal balls were brought to Europe from the Near East by the Crusaders. They were credited with the ability to cure diseases. In Scotland and Ireland, farmers used crystal balls to keep livestock healthy.  Today, crystal balls are still used for mystical divination, gazing and New Age healing. They vary in size ranging from small beads measuring a few millimeters in diameter to the largest known crystal ball in existence.  It is displayed at the Smithsonian Institution in Washington, D.C.  It is called the "Warner Crystal Ball." This specimen has a weight of 48.5 kilograms and a diameter of 32.5 centimeters.  <br></div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>Crystal balls were brought to Europe from the Near East by the Crusaders. They were credited with the ability to cure diseases. In Scotland and Ireland, farmers used crystal balls to keep livestock healthy.  Today, crystal balls are still used for mystical divination, gazing and New Age healing. They vary in size ranging from small beads measuring a few millimeters in diameter to the largest known crystal ball in existence.  It is displayed at the Smithsonian Institution in Washington, D.C.  It is called the "Warner Crystal Ball." This specimen has a weight of 48.5 kilograms and a diameter of 32.5 centimeters.  <br></div></td></tr>
</table>Barbrahttp://gemologyproject.com/wiki/index.php?title=Rock_Crystal&diff=5507&oldid=prevBarbra at 23:00, 21 January 20072007-01-21T23:00:10Z<p></p>
<table class="diff diff-contentalign-left" data-mw="interface">
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<td colspan='2' style="background-color: white; color:black; text-align: center;">Revision as of 23:00, 21 January 2007</td>
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<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[[Image:rock_crystal.jpg|left|framed|Quartz crystals from the personal collection of Barbra Voltaire]] <br clear="left" /></div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>[[Image:rock_crystal.jpg|left|framed|Quartz crystals from the personal collection of Barbra Voltaire]] <br clear="left" /></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>Rock Crystal is the common name for colorless quartz. The material is abundant and has been used for centuries as a gem.  Quartz crystals are among the earliest talismans. Examples of rock crystal objects date back to 75,000BC. Every culture on the planet has attributed magical power to quartz crystals. The Ancient Greeks prized rock crystal and believed it to be water frozen by the gods to a state of perpetual solidity. They carved the material into seals and intaglios.  The Japanese considered it "the perfect jewel", symbolizing patience and perseverance, the infinity of space and purity. Native Americans used quartz crystals as a hunting talisman and "fed" them with deer's blood. <br></div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>Rock Crystal is the common name for colorless quartz. The material is abundant and has been used for centuries as a gem.  Quartz crystals are among the earliest talismans. Examples of rock crystal objects date back to 75,000BC. Every culture on the planet has attributed magical power to quartz crystals. The Ancient Greeks prized rock crystal and believed it to be water frozen by the gods to a state of perpetual solidity. They carved the material into seals and intaglios.  The Japanese considered it "the perfect jewel", symbolizing patience and perseverance, the infinity of space and purity. Native Americans used quartz crystals as a hunting talisman and "fed" them with deer's blood. <br></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>[[Image:Xl_ball.jpg|left|framed|<del class="diffchange diffchange-inline">7 cm. </del>Crystal Ball]] <br clear="left" /></div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>[[Image:Xl_ball.jpg|left|framed|<ins class="diffchange diffchange-inline">70mm </ins>Crystal Ball]] <br clear="left" /></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>Crystal balls were brought to Europe from the Near East by the Crusaders. They were credited with the ability to cure diseases. In Scotland and Ireland, farmers used crystal balls to keep livestock healthy.  Today, crystal balls are still used for mystical divination, gazing and New Age healing. They vary in size ranging from small beads measuring a few millimeters in diameter to the largest known crystal ball in existence.  It is displayed at the Smithsonian Institution in Washington, D.C.  It is called the "Warner Crystal Ball." This specimen has a weight of 48.5 kilograms and a diameter of 32.5 centimeters.  <br></div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>Crystal balls were brought to Europe from the Near East by the Crusaders. They were credited with the ability to cure diseases. In Scotland and Ireland, farmers used crystal balls to keep livestock healthy.  Today, crystal balls are still used for mystical divination, gazing and New Age healing. They vary in size ranging from small beads measuring a few millimeters in diameter to the largest known crystal ball in existence.  It is displayed at the Smithsonian Institution in Washington, D.C.  It is called the "Warner Crystal Ball." This specimen has a weight of 48.5 kilograms and a diameter of 32.5 centimeters.  <br></div></td></tr>
</table>Barbrahttp://gemologyproject.com/wiki/index.php?title=Rock_Crystal&diff=5506&oldid=prevBarbra at 22:44, 21 January 20072007-01-21T22:44:55Z<p></p>
<table class="diff diff-contentalign-left" data-mw="interface">
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<td colspan='2' style="background-color: white; color:black; text-align: center;">Revision as of 22:44, 21 January 2007</td>
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<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>{{Rock_Crystal}}</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>{{Rock_Crystal}}</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> </div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">[[Image:rock_crystal.jpg|left|framed|Quartz crystals from the personal collection of Barbra Voltaire]] <br clear="left" /></ins></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Rock Crystal is the common name for colorless quartz. The material is abundant and has been used for centuries as a gem.<del class="diffchange diffchange-inline">There </del>are <del class="diffchange diffchange-inline">large variations in size</del>, <del class="diffchange diffchange-inline">ranging from small polished beads </del>to <del class="diffchange diffchange-inline">massive carvings</del>. The <del class="diffchange diffchange-inline">genuine </del>"<del class="diffchange diffchange-inline">crystal balls</del>," <del class="diffchange diffchange-inline">used sometimes in </del>"<del class="diffchange diffchange-inline">fortune-telling</del>" <del class="diffchange diffchange-inline">are composed of rock </del>crystal.  <del class="diffchange diffchange-inline">These quartz spheres </del>are <del class="diffchange diffchange-inline">known to have been ground </del>and <del class="diffchange diffchange-inline">polished in Japan</del>. They <del class="diffchange diffchange-inline">rarely have </del>a diameter <del class="diffchange diffchange-inline">exceeding 7.62 centimeters. These spheres are usually imitated by polished glass of larger diameters. The </del>largest known crystal ball is displayed at the Smithsonian Institution in Washington, D.C. It is called the "Warner Crystal Ball." This specimen has a weight of 48.5 kilograms and a diameter of 32.5 centimeters. <del class="diffchange diffchange-inline">The Ancient Greeks prized rock crystal and believed it to be water frozen by the gods to a state of perpetual solidity. They carved the material into seals and intaglios.</del></div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Rock Crystal is the common name for colorless quartz. The material is abundant and has been used for centuries as a gem. <ins class="diffchange diffchange-inline">  Quartz crystals </ins>are <ins class="diffchange diffchange-inline">among the earliest talismans. Examples of rock crystal objects date back to 75</ins>,<ins class="diffchange diffchange-inline">000BC. Every culture on the planet has attributed magical power </ins>to <ins class="diffchange diffchange-inline">quartz crystals</ins>. The <ins class="diffchange diffchange-inline">Ancient Greeks prized rock crystal and believed it to be water frozen by the gods to a state of perpetual solidity. They carved the material into seals and intaglios.  The Japanese considered it </ins>"<ins class="diffchange diffchange-inline">the perfect jewel", symbolizing patience and perseverance</ins>, <ins class="diffchange diffchange-inline">the infinity of space and purity. Native Americans used quartz crystals as a hunting talisman and </ins>"<ins class="diffchange diffchange-inline">fed" them with deer's blood. <br></ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">[[Image:Xl_ball.jpg|left|framed|7 cm. Crystal Ball]] <br clear=</ins>"<ins class="diffchange diffchange-inline">left</ins>" <ins class="diffchange diffchange-inline">/></ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">Crystal balls were brought to Europe from the Near East by the Crusaders. They were credited with the ability to cure diseases. In Scotland and Ireland, farmers used </ins>crystal <ins class="diffchange diffchange-inline">balls to keep livestock healthy</ins>.  <ins class="diffchange diffchange-inline">Today, crystal balls </ins>are <ins class="diffchange diffchange-inline">still used for mystical divination, gazing </ins>and <ins class="diffchange diffchange-inline">New Age healing</ins>. They <ins class="diffchange diffchange-inline">vary in size ranging from small beads measuring </ins>a <ins class="diffchange diffchange-inline">few millimeters in </ins>diameter <ins class="diffchange diffchange-inline">to the </ins>largest known crystal ball <ins class="diffchange diffchange-inline">in existence.  It </ins>is displayed at the Smithsonian Institution in Washington, D.C. <ins class="diffchange diffchange-inline"> </ins>It is called the "Warner Crystal Ball." This specimen has a weight of 48.5 kilograms and a diameter of 32.5 centimeters. <ins class="diffchange diffchange-inline"> <br></ins></div></td></tr>
</table>Barbrahttp://gemologyproject.com/wiki/index.php?title=Rock_Crystal&diff=5502&oldid=prevTom Goodwin, G.G.: Added "sometimes" as a description of meager frequency of use as compared to glass imitations.2007-01-20T21:54:58Z<p>Added "sometimes" as a description of meager frequency of use as compared to glass imitations.</p>
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<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Rock Crystal is the common name for colorless quartz. The material is abundant and has been used for centuries as a gem.There are large variations in size, ranging from small polished beads to massive carvings. The genuine "crystal balls," used in "fortune-telling" are composed of rock crystal.  These quartz spheres are known to have been ground and polished in Japan. They rarely have a diameter exceeding 7.62 centimeters. These spheres are usually imitated by polished glass of larger diameters. The largest known crystal ball is displayed at the Smithsonian Institution in Washington, D.C. It is called the "Warner Crystal Ball." This specimen has a weight of 48.5 kilograms and a diameter of 32.5 centimeters. The Ancient Greeks prized rock crystal and believed it to be water frozen by the gods to a state of perpetual solidity. They carved the material into seals and intaglios.</div></td><td class='diff-marker'>+</td><td style="color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Rock Crystal is the common name for colorless quartz. The material is abundant and has been used for centuries as a gem.There are large variations in size, ranging from small polished beads to massive carvings. The genuine "crystal balls," used <ins class="diffchange diffchange-inline">sometimes </ins>in "fortune-telling" are composed of rock crystal.  These quartz spheres are known to have been ground and polished in Japan. They rarely have a diameter exceeding 7.62 centimeters. These spheres are usually imitated by polished glass of larger diameters. The largest known crystal ball is displayed at the Smithsonian Institution in Washington, D.C. It is called the "Warner Crystal Ball." This specimen has a weight of 48.5 kilograms and a diameter of 32.5 centimeters. The Ancient Greeks prized rock crystal and believed it to be water frozen by the gods to a state of perpetual solidity. They carved the material into seals and intaglios.</div></td></tr>
</table>Tom Goodwin, G.G.