File:Tourm19.jpg
From The Gemology Project
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This round standard brilliant cut weighs 9.17 carats. It is cut with its table parallel with the c axis. This produces a gem with two stronger areas of pink (c axis) and two more pastel orange (a/b axis) areas. It is a clean bright gem that had its twin's picture in the G and G magazine's article on cuprian tourmaline from Mozambique. I had not really thought about copper in pinks, but when I got my spectrometer I had to test it out. Sure enough the gem shows indications of copper. I am sure the levels of copper are so low that it would just loose its color if heated.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 08:09, 18 January 2010 | | 400 × 600 (22 KB) | Barbra (talk | contribs) |
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