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| | Encyclopedia of gemstones Gold Arts Page 1 (Site not responding. Last check: 2007-11-06) |
 | | These tricons were once thought to be the result of etching are now beleived to be part of the growth process. |
 | | Colorless (white), gray, shades of yellow, brown, pink, green, fl, orange, lavender, blue, and very rarely red. |
 | | Colorless, white, gray, blue, blue green, green, violet, purple, orange, yellow, yellow green, brown, golden amber, peachy pink, pink, and fl. |
| www.gold-arts.com /gem_encyclopedia_1.html (767 words) |
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