Onyx is a chalcedony quartz mined in Brazil, Peru, California, Uruguay and India. Predominantly black in color, some onyx show white bands. Created from the silica deposits of volcanic eruptions, they are part of the quartz family and have a smooth and waxy luster.
Onyx is a very good stone choice to use for carving, and there are many examples of stunning cameos to prove it. Most onyx that is commercially available today is heat treated or color enhanced to increase depth of color. The bold inky black onyx is the most popular, and is also used as an alternative to black diamonds. It can be carved, faceted, or cut into a cabochon shape.
Loose Onyx Gemstones
Wedding Anniversary: 7th & 10th
Mohs hardness: 6.5 – 7 / 10
You will also like: black diamonds
Looks great in: yellow gold / rose gold / white gold / platinum / silver
