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Home Onyx Varieties Onyx Black Onyx Gemstone 7.08ct
Black Onyx Gemstone 7.32ct
Black Onyx Gemstone 7.32ct 17.98$ 13.84$
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Yellow Sapphire (Pukhraj) Gemstone
Yellow Sapphire (Pukhraj)-Ceylon-2.92ct 263.11$ 202.39$
-23%
Black Onyx Gemstone 7.08ct
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Black Onyx Gemstone 7.08ct

17.39$ 13.38$

Black Onyx Gemstone 7.08ct

SKU : AK00650

1 in stock

Extra Product Options Price 0$
Product Price 17.39$ 13.38$
Total Price 17.39$ 13.38$
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SKU: AK00650 Categories: Onyx, Onyx Varieties
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Description

Description

Black Onyx Gemstone 7.08ct

Description

This Black Onyx is Natural Gemstone Which is Black Colour, it’s Originates from India and it’s exact Weight is 7.08ct the Measurements are 13.90×10.00×6.20mm. The Shape and Cut of This Stone is Oval Cabochon It’s Graded Translucent and Clarity is Good. This 7.08ct Black Natural Onyx Gem is available for ready to Ship anywhere in The World. You Can also Select Certification and Shipment Method as Optional.

Details

Summary No AK00650
Species Natural Black Onyx
Weight 7.08ct
Shape/cut Oval Cabochon
Colour Black
Dimension 13.90×10.00×6.20mm
Clarity Good
Transparency Translucent
Origin India
Treatment None

Black Onyx Gemstone 7.08ct

Properties Of Onyx

Chemical Composition: Sio2

Hardness: 7

Specific Gravity (Density): 2.61 

Refractive Index: 1.53 – 1.54 

About: Black Onyx

Onyx belongs to chalcedony quartz and is a granular microcrystalline. Chalcedony is used by gemologists as a species name for all cryptocrystalline quartzes(E.G., Agate, Chrysoprase, Bloodstone, Jasper, Carnelian, Moss agate, Onyx and Sard as well as specifically only the bluish-white-gray variety). Although the crystal quartzes (rock crystal, amethyst, etc.)have a vitreous luster, chalcedonies are, in their natural state, waxy or dull. Records show the chalcedony have been stained by the ancient roman and ancient Egyptians. The usual method is the sugar-acid treatment. Chalcedony is dipped in a sugar solution which penetrates the porous rock, following cracks and flaws within the piece and the lines of the banding. The chalcedony is then heated in sulphuric acid, which carbonises the sugar, darkening it and turning it black. Deposits are found in Brazil, India, Madagascar, Malawi, Namibia, Zimbabwe, Sri Lanka, Uruguay, and California.

Additional information

Additional information

Colours

All Colours, Black

Origin

All Origins, India

Shapes

All Shapes, Oval

Weight

7 – 7.99 ct, All Weight

Gem Type

All Cut Gems, Cabochons

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Black Onyx Gemstone 7.08ct

Black Onyx Gemstone 7.08ct

17.39$ 13.38$

1 in stock

Extra Product Options Price 0$
Product Price 17.39$ 13.38$
Total Price 17.39$ 13.38$
Compare
Add to wishlist
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