Natural Extra Fine Black Onyx - Barrel Buff Top Cabochon - AAA+ Grade
NW Gems & Diamonds
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Natural Gems Only: 100% Earth Mined No Synthetics, No Simulants Full Disclosure of Any Treatments  MM size is the best measurement to select the right gemstone size. All gem carat weights are approximate. |
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Natural Onyx Species: Chalcedony Shape/Cut: Barrel 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) |
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