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Related articles:
Cameo (carving)
Chalcedony
List of minerals
Engraved gem
Hardstone carving
Lapidary
Agate
Quartz
Cryptocrystalline
Key terms: onyx colors black bands used carved treatments black onyx artificial chalcedony cameo been used variety white produced pliny acid techniques ancient much various sold gem greek Search external links cited by footnotes on Wikipedia page Onyx: |
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