Natural Extra Fine Black Onyx - Briolette - AAA+ Grade
NW Gems & Diamonds
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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Gemstone Report Natural Onyx Species: Chalcedony Shape/Cut: Briolette - Top Drilled 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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