Black Onyx

Black onyx is the trade name for dyed black chalcedony (in its natural state black onyx, a variety of chalcedony, is banded with white). A nice durable stone, with good resistance to chipping, which polishes well. Hardness: 7 (Mohs).

2 Items
Black Onyx Flat Disc Briolette 8mm ~ SINGLE
Black Onyx Heart Beads 5mm ~ 15.5'' Strand
Black Onyx Heart Beads 5mm ~ 15.5" Strand