File list
This special page shows all uploaded files.
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Date | Name | Thumbnail | Size | Description | Versions |
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13:33, 4 September 2012 | Wanna fanta diagram.jpg (file) | 280 KB | 1 | ||
15:49, 26 March 2012 | GOlogo.jpg (file) | 48 KB | 1 | ||
02:39, 19 March 2012 | TOC.jpg (file) | 307 KB | Image pointing out the TOC | 1 | |
02:21, 19 March 2012 | GPlogonoback.png (file) | 5 KB | Logo without white background | 1 | |
09:42, 14 April 2010 | Sodthumb2.jpg (file) | 58 KB | 1 | ||
09:32, 14 April 2010 | Star of david 43-45-47.gem (file) | 11 KB | Star of Dvid design | 1 | |
09:31, 14 April 2010 | Sod.jpg (file) | 142 KB | Star of David design | 1 | |
01:52, 10 March 2010 | Blueflashglassfilledruby.jpg (file) | 107 KB | Blue flashes in a glass filled ruby, diagnostic for lead-glass filing. <br /> © Tim Spauwen | 1 | |
09:16, 9 March 2010 | Spess2.JPG (file) | 43 KB | Crystal inclusions in a Tanzanian spessartite. <br /> © Tim Spauwen, FGA | 1 | |
09:12, 9 March 2010 | Spess3.JPG (file) | 54 KB | Double refractive crystal inclusion in a Loliondo spessartite. <br /> © Tim Spauwen, FGA | 1 | |
09:04, 9 March 2010 | Loliondospess.jpg (file) | 191 KB | Typical spessartite spectrum due to manganese, an essential component to spessartite which makes spessartite idiochromatic. Spectrum courtesy of Brian Thompson, edited by Tim Spauwen. | 1 | |
08:26, 29 January 2010 | Ribbonthumb.jpg (file) | 101 KB | Thumbnail of 'the Ribbon' by Charles R McCoy. | 1 | |
08:14, 29 January 2010 | Ribbon2.jpg (file) | 155 KB | The Ribbon by Charles R McCoy | 1 | |
08:05, 29 January 2010 | Ribbon.jpg (file) | 139 KB | 'The Ribbon' by Charles R McCoy | 1 | |
08:04, 29 January 2010 | Ribbon.gem (file) | 12 KB | 'The Ribbon' by Charles R McCoy | 1 | |
11:42, 25 January 2010 | GPFDC.jpg (file) | 134 KB | 1 | ||
06:59, 25 January 2010 | Design contestleft.png (file) | 77 KB | 1 | ||
06:58, 25 January 2010 | Design contest right.png (file) | 104 KB | 1 | ||
04:27, 28 November 2009 | Easy Bar.jpg (file) | 27 KB | Easy Bar by Hideki Ikeda | 1 | |
04:26, 28 November 2009 | Acorn.jpg (file) | 104 KB | Acorn by Hideki Ikeda | 1 | |
10:34, 1 November 2009 | SEM.JPG (file) | 24 KB | SEM <br /> Photo courtesy: WikiMedia Commons <br /> <br /> The SEMs technique, with additional attachments, can obtain elemental analysis. Polished specimens give a better result, since in rough specimens the variations are due to surface rather than th | 1 | |
10:30, 1 November 2009 | LA-ICP-MS.JPG (file) | 21 KB | LA-ICP-MS <br /> (Left side of photograph: ICP-MS, Right side of photograph: LA) <br /> Photo courtesy: Gübelin Gemmological Laboratory, Ltd <br /> <br /> The MS identifies and quantifies elements in terms of mass and charge and can detect 65 eleme | 1 | |
10:22, 1 November 2009 | LIBS.JPG (file) | 17 KB | LIBS Photo courtesy: Michael Stubelt and New Wave Research Company <br /> <br /> The technique, LIBS, also known as also known as Laser Spark Spectroscopy (LASS) or Laser-Induced Plasma Spectroscopy (LIPS), is used especially for: *The analyses of major, | 1 | |
10:15, 1 November 2009 | ED-XRF.JPG (file) | 20 KB | ED-XRF Photo Courtesy of Dr. Michael S. Krzemnicki, Director, Swiss Gemmological Institute © Swiss Gemmological Institute SSEF <br /> The ED-XRF, a non-destructive spectroscopic technique, uses an x-ray beam that illuminates the gemstone sample. This e | 1 | |
10:11, 1 November 2009 | FTIR.JPG (file) | 14 KB | FT-IR spectrometer Photo courtesy: Gübelin Gemmological Laboratory, Ltd. <br /> Infrared spectroscopy measures absorptions of a gem material, due to vibrations in the crystal structure, in the infrared region of the electromagnetic spectrum. The FT-I | 1 | |
10:07, 1 November 2009 | Ramanscope.JPG (file) | 21 KB | Raman Photo courtesy: Gübelin Gemmological Laboratory, Ltd. This is a light-scattering and non-destructive technique which allows for the identification of inclusions in a gemstone by comparing a gemstone’s spectrum to a mineral database for identifi | 1 | |
09:58, 1 November 2009 | UV-ViS-NIR.JPG (file) | 22 KB | UV-ViS-NIR spectrometer Photo courtesy: Gübelin Gemmological Laboratory, Ltd. <br /> This instrument analyzes a full range of spectrum, from the ultra-violet to near infrared. A gemstone absorbs light at a different range depending on its natural or tr | 1 | |
09:41, 1 November 2009 | Gemolite.JPG (file) | 26 KB | Gemological Stereo Microscope Photo courtesy: Gübelin Gemmological Laboratory, Ltd. The gemological microscope is an invaluable tool in the laboratory. By using illumination techniques, the internal characteristics of a gemstone can be examined with th | 1 | |
09:00, 1 November 2009 | Tsav.JPG (file) | 23 KB | Collection samples of gem-quality tsavorite from the Scorpion Mine Photo courtesy: Vincent Pardieu | 1 | |
08:58, 1 November 2009 | Tsavsorting.JPG (file) | 39 KB | Research Field Gemologist, Vincent Pardieu, studies tsavorite rough at a sorting station, alongside tsavorite miners and Campbell Bridges. Photo courtesy: Vincent Pardieu | 1 | |
08:56, 1 November 2009 | Tsavpotato.JPG (file) | 26 KB | Tsavorite (tsavolite) porphyroblast or “potato with tsavorite eyes” Photo courtesy: Vincent Pardieu | 1 | |
08:48, 1 November 2009 | VPKenia1.JPG (file) | 24 KB | On a 2005 expedition in Tsavo, Kenya, Research Field Gemologist, Vincent Pardieu, visits the late Campbell Bridges, discoverer of the vanadium-bearing and beautiful green grossular garnet, tsavorite, at the Scorpion Mine, Pit #2, for gemological research | 1 | |
08:05, 1 November 2009 | Gubelin.bmp (file) | 26 KB | The father of origin determination, Dr. Eduard (Edward) J. Gübelin, (1913-2005), admires a set of gems from his personal collection, which contained more than 5,000 gemstones. Photo copyright of the Eduard J. Gübelin Family | 1 | |
10:55, 28 September 2009 | Fac9.jpg (file) | 8 KB | 1 | ||
10:54, 28 September 2009 | Fa5.jpg (file) | 9 KB | 1 | ||
10:49, 28 September 2009 | Fac7.jpg (file) | 4 KB | 1 | ||
10:48, 28 September 2009 | Fa4.jpg (file) | 5 KB | 1 | ||
10:46, 28 September 2009 | Fac6.jpg (file) | 4 KB | 1 | ||
10:45, 28 September 2009 | Fac4.jpg (file) | 4 KB | 1 | ||
10:43, 28 September 2009 | Fac3.jpg (file) | 4 KB | 1 | ||
10:37, 28 September 2009 | Fa2.jpg (file) | 4 KB | 1 | ||
09:59, 28 September 2009 | Fac1.jpg (file) | 5 KB | 1 | ||
09:51, 28 September 2009 | Faceting head.jpg (file) | 9 KB | 1 | ||
09:48, 28 September 2009 | SRB800px2.JPG (file) | 84 KB | 1 | ||
08:55, 28 September 2009 | SRB.gem (file) | 11 KB | 1 | ||
11:23, 23 September 2009 | Mitch6.jpg (file) | 165 KB | 1 | ||
11:22, 23 September 2009 | Mitch5.jpg (file) | 171 KB | Image courtesy of mhuynh | 1 | |
11:21, 23 September 2009 | Mitch4.jpg (file) | 179 KB | Image courtesy of mhuynh | 1 | |
11:20, 23 September 2009 | Mitch3.jpg (file) | 168 KB | Image courtesy of mhuynh | 1 | |
11:20, 23 September 2009 | Mitch2.jpg (file) | 155 KB | Image courtesy of mhuynh | 1 |
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