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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: 8.50 X 6.60 MM
Weight: 2.290 CTS
Shape: Oval
Clarity: Eye clean to Slightly included
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Chrome Tourmaline Single
limited time offer, ref# YCH103aw
Chrome Tourmaline Single Fancy Slightly included
Size: 7.60 X 6.00 MM
Weight: 1.000 CTS
Shape: Fancy
Clarity: Slightly included
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5 Demantoid ’s available
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Gemstone Variety: Hits Index
Going Up Tanzanite +312573 +5.4%
average price USD 469.80 per item
Going Up Sapphire +1330 +0.6%
average price USD 395.01 per item
Going Down Amber -1361 -1.0%
average price USD 197.21 per item
Going Down Alexandrite -971 -0.9%
average price USD 2469.53 per item
Going Down Spinel -1586 -2.4%
average price USD 450.81 per item
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Gems Legend and  Lore This month birthstone: Aquamarine
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Mutable Sign. Very sensitive. Your zodiac stone...more

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