Natural Extra Fine Black Onyx - Marquise Flat Buff Top Cabochon AAA+

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Natural Onyx

Species: Chalcedony

Shape/Cut: Marquise Flat Buff Top Cabochon - Single Bevel - SBBT

Quality: AAA+

Clarity: Clean +

Color: Extra Fine Black

Polish: Excellent

RI: 1.535-1.539

Specific Gravity: 2.6

Hardness (Mohs): 6.5-7

Treatment: Dyed (Standard)

Origin: Brazil

With this gemstone we guarantee all grading, treatment disclosure and competitive pricing.

We believe in and follow full treatment disclosure of our gemstones.

100% satisfaction guaranteed. We back this gemstone with a no questions asked 30 day return policy.