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Black Onyx Oval Cabochons
Moh’s Scale Hardness: 6.5-7
Specific Gravity: 2.58-2.64
Refractive Index: 1.54-1.55
Treatment: Dyed
Care: Normal
Origin: China
| Stone Size | 8x6mm (pack of 8), 10x8mm (pack of 6), 12x10mm (pack of 4), 14x10mm (pack of 4) |
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