Black Onyx Ring - Sterling Silver and sometimes realgar (orange)

and sometimes realgar (orange)

It does exhibit a slight transition to a lighter brown near the tip of the specimen

The beautiful blue hues of this stone are caused by the substitution of copper for calcium

was first found in a tin mine located in Saxony

stalactites

Black Onyx Ring - Sterling Silver and sometimes realgar (orange)This ring features a "basketweave" design with a flat, oval stone. Size: 9 Stone Size: 10 x 12 mm Black Onyx is a variety of silicate minerals similar to agate. The primary difference is the formation of the chalcedony bands. Agates show curved banding while onyx shows parallel banding. The word onyx comes from the ancient Greek word "" meaning claw. The uses of onyx for jewelry, tools, and art can be traced back almost 5000 years. Black Onyx is a