Oldest pages
Showing below up to 250 results in range #51 to #300.
View (previous 250 | next 250) (20 | 50 | 100 | 250 | 500)
- Kornerupine (09:03, 10 January 2007)
- Dioptase (09:55, 10 January 2007)
- Dravite (10:30, 10 January 2007)
- True Blue (17:33, 14 January 2007)
- Goldstone (20:50, 14 January 2007)
- Luster (16:33, 15 January 2007)
- Andesine (09:57, 16 January 2007)
- Datolite (08:30, 17 January 2007)
- Cyprine (20:49, 17 January 2007)
- Larimar (23:16, 17 January 2007)
- Willemite (15:35, 18 January 2007)
- Jade (14:02, 19 January 2007)
- Zincite (14:07, 19 January 2007)
- Pectolite (22:46, 19 January 2007)
- Wiki (20:40, 1 February 2007)
- Andradite (10:53, 12 March 2007)
- Sample page (07:59, 17 March 2007)
- Chinese freshwater pearls (07:30, 10 April 2007)
- Tahitian (07:35, 10 April 2007)
- South Sea (07:40, 10 April 2007)
- Black Opal (08:12, 10 April 2007)
- Tri-Color (19:01, 1 May 2007)
- Main (11:31, 1 June 2007)
- Jill (13:54, 1 June 2007)
- Paraiba (05:54, 21 June 2007)
- Miller indices (05:55, 26 June 2007)
- Brilliance (10:15, 2 July 2007)
- Prasolite (11:35, 5 July 2007)
- Praseolite (07:55, 6 July 2007)
- Course:Refractometer (09:50, 19 July 2007)
- Course:Polarization (13:15, 20 July 2007)
- Schorl (04:27, 29 July 2007)
- Course:Total internal reflection (12:10, 29 July 2007)
- Obsidian (13:43, 30 July 2007)
- Images:Chrysoberyl (11:41, 2 August 2007)
- Fire Opal (11:49, 2 August 2007)
- Blue Peruvian Opal (12:26, 2 August 2007)
- Images:Spinel (12:39, 4 August 2007)
- Images:Sphene (04:28, 5 August 2007)
- Maw-sit-sit (10:46, 5 August 2007)
- Course:Dispersion (09:12, 12 August 2007)
- Course:Optical properties (09:17, 12 August 2007)
- Inclusions:Spinel (06:12, 14 August 2007)
- Course:Home (09:35, 14 August 2007)
- Moonstone (07:23, 15 August 2007)
- Pezzottaite (08:09, 15 August 2007)
- Images:Amethyst (12:30, 15 August 2007)
- Images:Idocrase (12:33, 15 August 2007)
- Musgravite (09:51, 16 August 2007)
- Poudretteite (04:31, 17 August 2007)
- Images:Pezzottaite (08:07, 17 August 2007)
- Images:Spodumene (10:42, 23 August 2007)
- Essays:Spinel (11:01, 24 August 2007)
- Essays:Clinohumite (06:28, 25 August 2007)
- Images:Emerald (11:26, 26 August 2007)
- Danburite (09:25, 27 August 2007)
- Images:Axinite (04:29, 29 August 2007)
- Axinite (04:56, 29 August 2007)
- Course:Reflection (06:14, 29 August 2007)
- Inclusions:Spessartite (04:24, 30 August 2007)
- Elbaite (06:23, 3 September 2007)
- Rubellite (06:34, 3 September 2007)
- Isomorphous replacement (07:49, 8 September 2007)
- Ekanite (05:15, 12 September 2007)
- Arkansas stone (06:50, 16 September 2007)
- Auguste Verneuil (12:06, 21 September 2007)
- James Nelson (11:55, 22 September 2007)
- Frequently Asked Questions (11:23, 8 October 2007)
- Course:Refraction (06:15, 15 October 2007)
- Quartz - Polycrystalline (08:57, 28 October 2007)
- Siderite (13:11, 31 October 2007)
- Essays:Adding arrows (04:32, 8 November 2007)
- Beryl (13:19, 21 December 2007)
- Calcite (01:00, 22 December 2007)
- Malachite (20:09, 20 January 2008)
- Inclusions:Ruby (03:32, 13 February 2008)
- Inclusions:Sapphire (03:37, 13 February 2008)
- Images:Sillimanite (18:20, 3 April 2008)
- Iolite (12:20, 4 April 2008)
- Ammolite (07:54, 5 April 2008)
- Peridot (13:10, 6 April 2008)
- Lapis Lazuli (01:26, 21 May 2008)
- Melo melo pearl (01:25, 23 May 2008)
- Scapolite (10:26, 19 July 2008)
- Quahog (05:31, 19 February 2009)
- Sea of Cortez pearl (02:53, 13 March 2009)
- Images:Alexandrite (02:44, 18 March 2009)
- TableTemplate (11:54, 3 May 2009)
- Sunset Quartz (13:58, 3 May 2009)
- Jeremejevite (21:29, 3 May 2009)
- The Chemistry of Gemstones (11:46, 30 May 2009)
- Optical properties of gemstones (12:00, 30 May 2009)
- Reflection (12:18, 30 May 2009)
- Nature of light (12:20, 30 May 2009)
- Diffraction (12:27, 30 May 2009)
- Interference (12:30, 30 May 2009)
- Equipment used to identify gemstones (12:41, 30 May 2009)
- Spectroscope (12:45, 30 May 2009)
- Sublimation (13:08, 30 May 2009)
- Synthetic moissanite (13:16, 30 May 2009)
- Video presentations (13:22, 30 May 2009)
- Glossary of Terms (16:03, 30 May 2009)
- Crystallography (21:59, 30 May 2009)
- Twinning (22:05, 30 May 2009)
- Hiddenite (15:35, 1 June 2009)
- Microscope (15:37, 1 June 2009)
- Chrome Diopside (15:39, 1 June 2009)
- Habit (15:42, 1 June 2009)
- Form (15:44, 1 June 2009)
- Color (15:50, 1 June 2009)
- Symmetry (16:01, 1 June 2009)
- Cleavage (16:02, 1 June 2009)
- Polarization (16:03, 1 June 2009)
- Refraction (16:04, 1 June 2009)
- Idocrase (16:10, 1 June 2009)
- Sillimanite (16:10, 1 June 2009)
- Flame fusion (16:15, 1 June 2009)
- Immersion cell (16:59, 1 June 2009)
- Zircon (17:13, 1 June 2009)
- Spodumene (17:15, 1 June 2009)
- Sphene (17:15, 1 June 2009)
- Topaz (17:16, 1 June 2009)
- Pearl (17:17, 1 June 2009)
- Kyanite (17:18, 1 June 2009)
- Synthetic forsterite (17:19, 1 June 2009)
- Clinohumite (17:19, 1 June 2009)
- Diaspore (17:20, 1 June 2009)
- Skull crucible (17:20, 1 June 2009)
- Pleochroism (21:22, 17 June 2009)
- Heliodor (09:02, 21 June 2009)
- Quartz (09:11, 12 July 2009)
- Liddicoatite (09:25, 12 July 2009)
- Taaffeite (16:23, 13 July 2009)
- Citrine (09:46, 26 July 2009)
- Phenakite (14:26, 3 August 2009)
- Serendibite (21:47, 9 August 2009)
- Images:Copal (00:38, 10 August 2009)
- Copal (09:23, 10 August 2009)
- Heavy Liquids (15:58, 10 August 2009)
- Prehnite (08:48, 23 August 2009)
- Images:Amber (11:07, 23 August 2009)
- Hackmanite (18:57, 20 September 2009)
- Watermelon (18:14, 21 September 2009)
- Example (04:22, 23 September 2009)
- Math (23:12, 26 September 2009)
- Double Refraction (01:42, 7 October 2009)
- Edgett - Heart and Soul Preform (02:07, 12 October 2009)
- Heart and soul preform (09:58, 16 October 2009)
- Voltolini - Bug Barion Egg (03:29, 17 October 2009)
- Flanigan - PG-Pineapple (04:02, 17 October 2009)
- Edgett - Heart and Soul (04:03, 17 October 2009)
- Elser - Diamond Cushion (04:03, 17 October 2009)
- Long - Wittelsbach replica (04:06, 17 October 2009)
- Voltolini - Bug Barion (04:07, 17 October 2009)
- Voltolini - Bumblebee (04:07, 17 October 2009)
- Voltolini - Sakura 80 (04:08, 17 October 2009)
- Voltolini - Starfish 80 (04:08, 17 October 2009)
- Images:Sapphire (04:44, 18 October 2009)
- Klein - Sparko Three (Garnet) (07:58, 19 October 2009)
- Voltolini - Rosa Dome (11:09, 21 October 2009)
- Voltolini - Superstarfish Dome 80 (11:31, 21 October 2009)
- Voltolini - Crisantemo (01:10, 22 October 2009)
- Carriere - Dale's 11 (07:49, 30 October 2009)
- Lapidary Arts (17:36, 31 October 2009)
- Sapphirine (02:11, 2 November 2009)
- Voltolini - Maya drop (02:36, 5 November 2009)
- Allen-williams - Dragon Fly (20:55, 9 November 2009)
- Faceting (21:43, 12 November 2009)
- Voltolini - CampanileUCB (06:16, 17 November 2009)
- Ikeda - Acorn (01:40, 23 November 2009)
- Huynh - Beginner Dome (22:04, 23 November 2009)
- Ikeda - Easy Bar (05:19, 29 November 2009)
- Ikeda - Turtle Checker (05:56, 29 November 2009)
- Ikeda - Moon Night (10:12, 29 November 2009)
- Voltolini - Soccer dome (13:14, 29 November 2009)
- Beginner Blossom - Michiko Huynh (14:32, 7 December 2009)
- Huynh-Beginner Tourm (15:43, 14 December 2009)
- Voltolini - Asahi (08:46, 21 December 2009)
- Introduction to Gemology (09:17, 2 January 2010)
- Voltolini - Grilled (07:38, 11 January 2010)
- Voltolini - Trilled (10:04, 13 January 2010)
- Synthetic cubic zirconia (16:35, 13 January 2010)
- Huynh-Beginner Honeycomb (17:05, 15 January 2010)
- Voltolini - Ventilatore (09:32, 19 January 2010)
- Origins of minerals (18:45, 19 January 2010)
- Origin determination (18:46, 19 January 2010)
- Voltolini - Tribrill (08:56, 25 January 2010)
- GPFDC (10:54, 25 January 2010)
- Elbaite variety "Laurellite" (15:58, 25 January 2010)
- Voltolini - Sakura 96 (06:32, 26 January 2010)
- McCoy - The Ribbon (08:18, 29 January 2010)
- Voltolini - Trottola (02:41, 3 February 2010)
- Voltolini - Hime (11:50, 15 February 2010)
- Voltolini - Desoppo bars (09:27, 16 February 2010)
- Voltolini - Tartan (10:02, 18 February 2010)
- Huynh - Beginner Shield (16:45, 20 February 2010)
- Voltolini - Htims bar (03:59, 23 February 2010)
- Voltolini - Lippy (04:35, 2 March 2010)
- Huynh - Beginner Asscher (16:12, 6 March 2010)
- Inclusions:Topaz (17:03, 7 March 2010)
- Rock Crystal (14:12, 9 March 2010)
- Images:Inclusions in Quartz (14:14, 9 March 2010)
- Inclusions (14:35, 9 March 2010)
- Huynh - Plumeria 80 (13:29, 12 March 2010)
- Voltolini - Fiorello 80 (10:53, 22 March 2010)
- Voltolini - Fiorino 80 (11:04, 22 March 2010)
- Voltolini - Fantastick 80 (03:10, 23 March 2010)
- Voltolini - Petaluma 80 (09:41, 23 March 2010)
- Voltolini - Starkling 80 (11:05, 24 March 2010)
- Voltolini - Squartuguese (03:49, 6 April 2010)
- Advanced Testing Tools (19:13, 12 April 2010)
- Bienia - SOD (09:49, 14 April 2010)
- Feldspar (12:22, 19 April 2010)
- Voltolini - Tristano (00:52, 30 May 2010)
- Elser - Xtacy (12:36, 30 May 2010)
- Voltolini - Barionetta (11:44, 31 May 2010)
- Heat Treatment (08:54, 13 June 2010)
- Grossular (22:30, 26 June 2010)
- Images:Moonstone (02:22, 4 July 2010)
- Images:Spessartite (02:28, 4 July 2010)
- Images:Maw-sit-sit (02:34, 4 July 2010)
- Images:Fire Opal (02:39, 4 July 2010)
- Images:Sunstone (02:43, 4 July 2010)
- Chrysocolla (02:59, 4 July 2010)
- Images:Topaz (03:04, 4 July 2010)
- Voltolini - Easy opp square (05:41, 4 July 2010)
- Voltolini - Sparkly dome (01:42, 7 July 2010)
- Framed Hex (11:15, 7 July 2010)
- Voltolini - S-hex-y (08:48, 11 July 2010)
- Voltolini - Trip-trap (13:59, 14 July 2010)
- Huynh - Hepta Heart (10:13, 28 July 2010)
- Voltolini - Xmas pendant (04:45, 18 August 2010)
- Voltolini - No: it's trigonal (04:46, 18 August 2010)
- Voltolini - Pandoro (06:01, 18 August 2010)
- Gemstone Treatments and Enhancements (18:39, 22 August 2010)
- Huynh - Framed Hex (16:11, 27 August 2010)
- Voltolini - Darts (08:19, 4 September 2010)
- Sunstone (20:57, 6 September 2010)
- Pyrope (21:05, 6 September 2010)
- Huynh - Beginner Cushion (14:45, 9 September 2010)
- Huynh - Beginner Trillion (14:50, 9 September 2010)
- Voltolini - Olive bar (08:09, 12 September 2010)
- Fluorite (14:16, 26 September 2010)
- Amazonite (03:32, 27 September 2010)
- Vesuvianite (07:13, 28 September 2010)
- Spessartite (20:03, 3 October 2010)
- Voltolini - Marquise del grillo (06:22, 5 October 2010)
- Diamond (19:42, 7 October 2010)
- Voltolini - Hoshi (12:44, 3 November 2010)
- Voltolini - Tribal (08:59, 12 December 2010)