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Onyx
Onyx is a name associated with banded chalcedony, though jewelry trade usage often includes uniformly black chalcedony. A polished black appearance does not establish how that color was produced. The dark surface gives a clean outline and strong contrast with lighter stones...
Onyx is a name associated with banded chalcedony, though jewelry trade usage often includes uniformly black chalcedony. A polished black appearance does not establish how that color was produced. The dark surface gives a clean outline and strong contrast with lighter stones or metal details. Banding may be visible in some cuts and absent from the face of others.
Choosing your piece
Check whether the listing identifies chalcedony and discloses coloring or other treatments. Compare finish, bead diameter and the condition around drill holes; the trade label alone is not a grading report.
Care notes
Avoid impact, harsh chemicals and prolonged soaking of strung jewelry. Use a soft cloth and dry the piece thoroughly, paying attention to elastic and decorative metal components.
Collection names follow our product descriptions. Composition, dimensions, treatments and any supporting documentation remain specific to each listing.
