Dioptase, gemstones shopping at Multicolour.com

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July 31, 2010

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

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Finest gems/

Alexandrite Single
From our finest gemstones collection

Alexandrite Single Oval Slightly included

Size:	9.30 X 7.10 MM
Weight:	3.06 CTS
Shape:	Oval
Clarity:	Slightly included

Usually ships within 24 hours

OUR PRICE
USD 22237.00

Deal of the Day/

Freshwater Pearls Closeout
limited time offer, ref# XPL152dc

Freshwater Pearls Closeout Fancy Translucent

Size:	37.20 X 12.20 MM
Weight:	13.68 CTS
Shape:	Fancy
Clarity:	Translucent

Usually ships within 24 hours

10 % OFF, YOU SAVE 0.68 USD

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USD 6.16

Today’s Trade/

Multicolour Bestsellers:
	Sapphire Single 908 Sapphire ’s available Browse Offers \| Learn More
	Tanzanite Single 240 Tanzanite ’s available Browse Offers \| Learn More
	Spinel Single 257 Spinel ’s available Browse Offers \| Learn More
	Zircon Single 477 Zircon ’s available Browse Offers \| Learn More
	Tourmaline Single 159 Tourmaline ’s available Browse Offers \| Learn More

People search for:		Hits	Index
	Alexandrite	-85	-0.2%
average price USD 2214.68 per item
	Sapphire	+23	+0.1%
average price USD 427.36 per item
	Spinel	+4	+0.0%
average price USD 624.29 per item
	Diamond	-21	-0.1%
average price USD 7515.12 per item
	Tanzanite	-104	-0.6%
average price USD 979.34 per item
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Gem Library /
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