noun
- plural of onyx; varieties of chalcedony with alternating bands of different colors, typically black and white, used as gemstones
Examples
- The jewelry store displayed several beautiful onyxes in the gemstone case.
- Ancient craftsmen carved intricate designs into black and white onyxes.
- The collector owned rare onyxes from different regions around the world.
- These onyxes show distinct banding patterns that make them valuable.
- The museum’s mineral exhibit featured onyxes alongside other precious stones.