http://gemologyproject.com/wiki/index.php?title=Corundum&feed=atom&action=historyCorundum - Revision history2024-03-28T18:24:50ZRevision history for this page on the wikiMediaWiki 1.28.0http://gemologyproject.com/wiki/index.php?title=Corundum&diff=4643&oldid=prevGemma at 01:25, 23 December 20062006-12-23T01:25:40Z<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;"><div>[[Image:corundum.jpg]]<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>[[Image:corundum.jpg]]<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>Corundum is an aluminum oxide that occurs in every color of the rainbow. It is allochromatic.  When it is red it is termed <del class="diffchange diffchange-inline">a </del>[[ruby]]. When it occurs in any other color it is termed <del class="diffchange diffchange-inline">a </del>[[sapphire]]. There are two primary ways that corundum is formed. One is the metamorphosis of limestone and the other is an igneous occurrence in rocks lacking in silica. Since corundum is so hard it is very resistant to weathering. Therefore, it accumulates in placer gravels. Placer deposits in Sri Lanka at Ratnapura have been mined since before the time of Buddha. The major sources <del class="diffchange diffchange-inline">today </del>for rubies are Burma and Madagascar. The major source for sapphire is Madagascar. Other <del class="diffchange diffchange-inline">locals </del>include Pakistan, Afghanistan, India, East Africa and Yogo Gulch in Montana.</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>Corundum is an aluminum oxide that occurs in every color of the rainbow. It is allochromatic.  When it is red<ins class="diffchange diffchange-inline">, </ins>it is termed [[ruby]]. When it occurs in any other color<ins class="diffchange diffchange-inline">, </ins>it is termed [[sapphire]]. There are two primary ways that corundum is formed. One is the metamorphosis of limestone and the other is an igneous occurrence in rocks lacking in silica. Since corundum is so hard<ins class="diffchange diffchange-inline">, </ins>it is very resistant to weathering. Therefore, it accumulates in placer gravels. Placer deposits in Sri Lanka at Ratnapura have been mined since before the time of Buddha. The major sources for rubies <ins class="diffchange diffchange-inline">today </ins>are Burma and Madagascar. The major source for sapphire is Madagascar. Other <ins class="diffchange diffchange-inline">locations </ins>include Pakistan, Afghanistan, India, East Africa and Yogo Gulch in Montana.</div></td></tr>
</table>Gemmahttp://gemologyproject.com/wiki/index.php?title=Corundum&diff=4540&oldid=prevDoos at 20:22, 17 December 20062006-12-17T20:22:50Z<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;"><div>[[Image:corundum.jpg]]<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>[[Image:corundum.jpg]]<br /></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>Corundum is an aluminum oxide that occurs in every color of the rainbow. It is allochromatic.  When it is red it is termed a [[ruby]]. When it occurs in any other color it is termed a [[sapphire]]. There are two primary ways that corundum is formed. One is the metamorphosis of limestone and the other is an igneous occurrence in rocks lacking in silica. Since corundum is so hard it is very resistant to weathering. Therefore, it accumulates in placer gravels. Placer deposits in Sri Lanka at Ratnapura have been mined since before the time of Buddha. The major sources today for rubies are Burma and Madagascar. The major source for sapphire is Madagascar. Other locals include Pakistan, Afghanistan, India, East Africa and Yogo Gulch in Montana.</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>Corundum is an aluminum oxide that occurs in every color of the rainbow. It is allochromatic.  When it is red it is termed a [[ruby]]. When it occurs in any other color it is termed a [[sapphire]]. There are two primary ways that corundum is formed. One is the metamorphosis of limestone and the other is an igneous occurrence in rocks lacking in silica. Since corundum is so hard it is very resistant to weathering. Therefore, it accumulates in placer gravels. Placer deposits in Sri Lanka at Ratnapura have been mined since before the time of Buddha. The major sources today for rubies are Burma and Madagascar. The major source for sapphire is Madagascar. Other locals include Pakistan, Afghanistan, India, East Africa and Yogo Gulch in Montana.</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><del style="font-weight: bold; text-decoration: none;"></del></div></td><td colspan="2"> </td></tr>
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</table>Dooshttp://gemologyproject.com/wiki/index.php?title=Corundum&diff=3939&oldid=prevAfricanuck at 15:21, 9 November 20062006-11-09T15:21:40Z<p></p>
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<td colspan='2' style="background-color: white; color:black; text-align: center;">Revision as of 15:21, 9 November 2006</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:corundum.jpg]]<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>[[Image:corundum.jpg]]<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>Corundum is an aluminum oxide that occurs in every color of the rainbow. It is allochromatic.  When it is red it is termed a ruby. When it occurs in any other color it is termed a sapphire. There are two primary ways that corundum is formed. One is the metamorphosis of limestone and the other is an igneous occurrence in rocks lacking in silica. Since corundum is so hard it is very resistant to weathering. Therefore, it accumulates in placer gravels. Placer deposits in Sri Lanka at Ratnapura have been mined since before the time of Buddha. The major sources today for rubies are Burma and Madagascar. The major source for sapphire is Madagascar. Other locals include Pakistan, Afghanistan, India, East Africa and Yogo Gulch in Montana.</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>Corundum is an aluminum oxide that occurs in every color of the rainbow. It is allochromatic.  When it is red it is termed a <ins class="diffchange diffchange-inline">[[</ins>ruby<ins class="diffchange diffchange-inline">]]</ins>. When it occurs in any other color it is termed a <ins class="diffchange diffchange-inline">[[</ins>sapphire<ins class="diffchange diffchange-inline">]]</ins>. There are two primary ways that corundum is formed. One is the metamorphosis of limestone and the other is an igneous occurrence in rocks lacking in silica. Since corundum is so hard it is very resistant to weathering. Therefore, it accumulates in placer gravels. Placer deposits in Sri Lanka at Ratnapura have been mined since before the time of Buddha. The major sources today for rubies are Burma and Madagascar. The major source for sapphire is Madagascar. Other locals include Pakistan, Afghanistan, India, East Africa and Yogo Gulch in Montana.</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="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>==External links==</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>==External links==</div></td></tr>
</table>Africanuckhttp://gemologyproject.com/wiki/index.php?title=Corundum&diff=3888&oldid=prevAfricanuck at 12:05, 4 November 20062006-11-04T12:05:43Z<p></p>
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<td colspan='2' style="background-color: white; color:black; text-align: center;">Revision as of 12:05, 4 November 2006</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>{{corundum}}</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>{{corundum}}</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:corundum.jpg]]<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>[[Image:corundum.jpg]]<br <ins class="diffchange diffchange-inline">/</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>Corundum is an aluminum oxide that occurs in every color of the rainbow. It is allochromatic.  When it is red it is termed a ruby. When it occurs in any other color it is termed a sapphire. There are two primary ways that corundum is formed. One is the metamorphosis of limestone and the other is an igneous occurrence in rocks lacking in silica. Since corundum is so hard it is very resistant to weathering. Therefore, it accumulates in placer gravels. Placer deposits in Sri Lanka at Ratnapura have been mined since before the time of Buddha. The major sources today for rubies are Burma and Madagascar. The major source for sapphire is Madagascar. Other locals include Pakistan, Afghanistan, India, East Africa and Yogo Gulch in Montana.</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>Corundum is an aluminum oxide that occurs in every color of the rainbow. It is allochromatic.  When it is red it is termed a ruby. When it occurs in any other color it is termed a sapphire. There are two primary ways that corundum is formed. One is the metamorphosis of limestone and the other is an igneous occurrence in rocks lacking in silica. Since corundum is so hard it is very resistant to weathering. Therefore, it accumulates in placer gravels. Placer deposits in Sri Lanka at Ratnapura have been mined since before the time of Buddha. The major sources today for rubies are Burma and Madagascar. The major source for sapphire is Madagascar. Other locals include Pakistan, Afghanistan, India, East Africa and Yogo Gulch in Montana.</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="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>==External links==</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>==External links==</div></td></tr>
</table>Africanuckhttp://gemologyproject.com/wiki/index.php?title=Corundum&diff=3296&oldid=prevAfricanuck at 17:47, 17 October 20062006-10-17T17:47:23Z<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;"><div>[[Image:corundum.jpg]]<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>[[Image:corundum.jpg]]<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>Corundum is an aluminum oxide that occurs in every color of the rainbow. When it is red it is termed a ruby. When it occurs in any other color it is termed a sapphire. There are two primary ways that corundum is formed. One is the metamorphosis of limestone and the other is an igneous occurrence in rocks lacking in silica. Since corundum is so hard it is very resistant to weathering. Therefore, it accumulates in placer gravels. Placer deposits in Sri Lanka at Ratnapura have been mined since before the time of Buddha. The major sources today for rubies are Burma and Madagascar. The major source for sapphire is Madagascar. Other locals include Pakistan, Afghanistan, India, East Africa and Yogo Gulch in Montana.</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>Corundum is an aluminum oxide that occurs in every color of the rainbow. <ins class="diffchange diffchange-inline">It is allochromatic.  </ins>When it is red it is termed a ruby. When it occurs in any other color it is termed a sapphire. There are two primary ways that corundum is formed. One is the metamorphosis of limestone and the other is an igneous occurrence in rocks lacking in silica. Since corundum is so hard it is very resistant to weathering. Therefore, it accumulates in placer gravels. Placer deposits in Sri Lanka at Ratnapura have been mined since before the time of Buddha. The major sources today for rubies are Burma and Madagascar. The major source for sapphire is Madagascar. Other locals include Pakistan, Afghanistan, India, East Africa and Yogo Gulch in Montana.</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="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>==External links==</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>==External links==</div></td></tr>
</table>Africanuckhttp://gemologyproject.com/wiki/index.php?title=Corundum&diff=2985&oldid=prevBarbra at 20:20, 2 October 20062006-10-02T20:20:10Z<p></p>
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<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:corundum.jpg]]<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">Corundum is an aluminum oxide that occurs in every color of the rainbow. When it is red it is termed a ruby. When it occurs in any other color it is termed a sapphire. There are two primary ways that corundum is formed. One is the metamorphosis of limestone and the other is an igneous occurrence in rocks lacking in silica. Since corundum is so hard it is very resistant to weathering. Therefore, it accumulates in placer gravels. Placer deposits in Sri Lanka at Ratnapura have been mined since before the time of Buddha. The major sources today for rubies are Burma and Madagascar. The major source for sapphire is Madagascar. Other locals include Pakistan, Afghanistan, India, East Africa and Yogo Gulch in Montana.</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;"></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>==External links==</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>==External links==</div></td></tr>
</table>Barbrahttp://gemologyproject.com/wiki/index.php?title=Corundum&diff=2954&oldid=prevAfricanuck at 15:48, 2 October 20062006-10-02T15:48:51Z<p></p>
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<td colspan='2' style="background-color: white; color:black; text-align: center;">Revision as of 15:48, 2 October 2006</td>
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</table>Africanuckhttp://gemologyproject.com/wiki/index.php?title=Corundum&diff=2666&oldid=prevAfricanuck at 08:40, 14 September 20062006-09-14T08:40:30Z<p></p>
<p><b>New page</b></p><div>{{corundum}}</div>Africanuck