Product description
Black onyx
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.
Please note that each stone is unique and may differ in colour and size from the photo.
Details :
Length : 10 mm
Width: 8 mm
Thickness: approx. 4.7 mm
Sold per 1 piece.
