what is an onyx stone?

its most accepted gemstone definition describes a solid black Chalcedony, or a banded or layered black and white Chalcedony. The term Onyx is occasionally used to described any engraved stone with a solid color base, or it may describe any banded gemstone with parallel banding

Where Can you find onyx ?

Onyx is a gemstone found in various regions of the world includingArgentina, Australia, BrazilCanadaChinaCzech Republic,GermanyIndia,Iran , Madagascar, the UK, and various states in the US. Onyx is formed in the vesicles of lava.

What is the color onyx ?

Onyx is a banded variety of chalcedony. The colors of its bands range from white to almost every color (save some shades, such as purple or blue). Commonly, specimens of onyx contain bands of black and/orwhite.