Black Onyx Oval cabochon, flat back.
Create unique jewelry with these pretty cabochons!
Attention, each stone is unique and can present significant differences with the photo.
The size may vary slightly from one cabochon to another.
To stick or to set.
Unset.
The onyx belongs to the Chalcedony family. Black onyx stone is not originally black. It is treated by being immersed in a solution of black sugar and acid. The soft, porous nature of the stone allows the solution to soak in. After immersion, the stone is then heated. This is a common process that makes the colour deeper and longer lasting.
Length: 8 mm
Width: 6 mm
Sold per piece.












