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Onyx
JEWELRY CLEANER
How To Clean Onyx
Physical Description
A type of chalcedony (microcrystalline quartz) characterized by parallel bands of black and white. Has a smooth texture with a waxy to vitreous luster. Often used in carved jewelry and ornaments.
Color Range
Black sometimes with white streaks.
Mohs Hardness Scale
6.5-7 Mohs
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