Gemstone Chart (A Searchable Collection of Precious/Semi-precious Stone Information)
This is
a searchable collection of international precious stone/gem. With its sparkle and color, a gem can mystify and intrigue people. Most gemstone buyers purchase gems for making jewelry. But some buyers are gemstone collectors. The chart is resource for your
gemstone buying and collecting.
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| Gemstone Chart |
 Natural Dioptase
Dioptase is an intense emerald-green to bluish-green copper cyclosilicate mineral.Dioptase is a rather unusual gemstone that will rarely be found in your basic jewelry stores. It is a beautiful gemstone with a very unusual combination of green colors.
Color: Dark blue green, emerald green, or turquoise
Categories: semi-precious stone
Chemical Composition: CuSiO2(OH) 2
Crystal Group: Hexagonal
Refractive Index: RI 1.644 – 1.709
Hardness: 5
Density: 3.28 – 3.55
Occurrence: Russia, Tsumeb Namibia, California and Colorado USA, Congo, Zaire, Chile
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Related Link: Gold Coins Chart Gold Bars Chart Diamond Size Chart Necklace Size Chart Ring Size Chart Ear Gauge Size Chart |
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Top Use:  Gemstone Chart Country:UNITED STATES
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- 2/26/2026 17:48Gemstone Chart Crystal Group:Cubic脙聝脝聮脙聠芒聙聶脙聝芒聙職脙聜脗
- 2/26/2026 17:48Gemstone Chart Color:-5364')/**/UNION/**/ALL/**/SELECT/**/NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,CONCAT(0x7170706a71,0x4941594a764f725a6269414143706a4673576352414d4e6842546c66464d7274596a79534a565366,0x716a787871)--/**/- Crystal Group:Hexagonal Categories:precious
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