Sardonyx is the name given to a variety of banded Onyx, being Chalcedony, a ...

White Onyx is a variety of Chalcedony, a micro-crystalline Quartz, silicon dioxide, that ...

Black Onyx is a variety of banded Chalcedony, the lines forming the banding being ...

Banded Onyx is a variety of Chalcedony, a micro-crystalline Quartz, silicon dioxide, ...

Onyx is a type of quartz that comes in a variety of colors. Onyx usually comes in ...