Approx. 20mm round cabochons, made of natural onyx, dyed to make it completely black.
Sold individually.

Natural black color is enhanced by dyeing.

Onyx is a black variety or chalcedony. Some white and semi-transparent banding is common for onyx, but this stone is often dyed to make it completely black. Like all chalcedony types, onyx gets very smooth and shiny after polishing. If you are looking for perfect black cabochons, onyx is the right gemstone for you.

Note: the image gives you a good general idea of what the cabochon looks like, but colors and patterns of natural stones may vary from lot to lot.