Onyx Rough from Arizona - $8.00/lb

Onyx is a gemstone that’s especially known for its opaque, all-black variety. Other varieties are black with with different-colored layers, including white. Onyx is a relatively soft stone with a hardness of around 6.5 to 7 on the Mohs scale and makes beautiful cabochons.

Example of an Arizona Onyx Cabochon.