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Natural Dioptase

Among collectors and mineralogists, dioptase is known and prized for its’ intense emerald blueish-green colors and the well formed crystals in which it can occur. It crystallizes in the hexagonal system forming coarse sized prismatic crystals, crystalline or cryptocrystalline aggregates or in massive forms. With a hardness of 5 and perfect cleavage dioptase is too soft for effective use as a gemstone and is rarely faceted. It usually occurs in the oxidation zone of copper deposits.


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Dioptase Profile

Color information: Dark blue green, emerald green, or turquoise
Refractive Index: RI 1.644 – 1.709
Chemical Composition: CuSiO2(OH) 2
Hardness: 5
Density: 3.28 – 3.55
Crystal Group: Hexagonal
Ocurrence: Russia, Tsumeb Namibia, California and Colorado USA, Congo, Zaire, Chile
Sign of the Zodiac: N/A
Month of the year: N/A
Dioptase

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Taaffeite Single
From our finest gemstones collection
Taaffeite Single Oval Eye clean to Slightly included
Size: 11.00 X 6.90 MM
Weight: 3.180 CTS
Shape: Oval
Clarity: Eye clean to Slightly included
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Chrysoberyl Closeout
limited time offer, ref# CB10868aa
Chrysoberyl Closeout Mixed shapes Eyeclean to Moderately included
Weight: 20.070 CTS
Shape: Mixed shapes
Clarity: Eyeclean to Moderately included
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Gemstone Variety: Hits Index
Going Up Sapphire +885 +0.0%
average price USD 325.77 per item
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average price USD 2651.27 per item
Going Down Tsavorite -330 +-0.0%
average price USD 329.85 per item
Going Down Spinel -207 +-0.0%
average price USD 526.32 per item
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average price USD 10428.87 per item
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Gem Library /
Gems Legend and  Lore This month birthstone: Aquamarine
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Mutable Sign. Very sensitive. Your zodiac stone...more

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