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 ¨C 1.709
Hardness: 5
Density: 3.28 ¨C 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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- 12/25/2025 04:58Gemstone Chart Color:Peach'/**/UNION/**/ALL/**/SELECT/**/NULL,NULL,NULL,NULL,NULL,CONCAT(0x716a7a6271,0x586e584f4b4850704e5653525079684564726a744843585a686b4a52506b6d536b6e4761726a6b58,0x716a707171),NULL,NULL,NULL,NULL,NULL,NULL--/**/-
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- 12/25/2025 04:58Gemstone Chart Color:Peach'/**/UNION/**/ALL/**/SELECT/**/NULL,NULL,NULL,NULL,NULL,NULL,CONCAT(0x716a7a6271,0x6c786841427971696251755976597565635a69537876624d525a576f6a4c61747a6d6a756f466d47,0x716a707171),NULL,NULL,NULL,NULL,NULL--/**/-
- 12/25/2025 04:58Gemstone Chart Color:green Crystal Group:cubicâĹââ�
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