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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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Alexandrite Single
From our finest gemstones collection
Alexandrite Single Trillion Eye clean
Size: 11.40 X 7.80 MM
Weight: 3.380 CTS
Shape: Trillion
Clarity: Eye clean
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Amber Single
limited time offer, ref# YAR104aa
Amber Single Fancy Transparent
Size: 23.20 X 6.09 MM
Weight: 2.530 CTS
Shape: Fancy
Clarity: Transparent
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Sapphire Sapphire
1621 Sapphire ’s available
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295 Alexandrite ’s available
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467 Tanzanite ’s available
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Zircon Zircon
231 Zircon ’s available
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Gemstone Variety: Hits Index
Going Up Amber +7566 +0.2%
average price USD 174.38 per item
Going Down Sapphire -219 +-0.0%
average price USD 384.69 per item
Going Down Alexandrite -563 -0.1%
average price USD 1848.84 per item
Going Up Anatase +626 +0.2%
average price USD 185.71 per item
Going Up Turquoise +914 +0.3%
average price USD 55.56 per item
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Gem Library /
Gems Legend and  Lore This month birthstone: Diamond
More from the Gem Library about Birthstones.
Aries Aries
March 21 – April 19
Cardinal sign. Born to be a Leader. Your zodiac stone...more

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