Colors appear more prominent against a background of black. Black is a striking color and black gem stones are more striking than others. The Onyx, in this context is a gem stone valued for its striking color and fine texture.

Onyx is a crystalline form of quartz, which has been crystallized as a result of environmental extremes, such as high temperature and high pressure. Its fine texture makes it ideal material for carving. The pure black variety of onyx is common, but there are other varieties which have bands across them in different shades of black. Sardonyx is a type of onyx in which the bands are in shade of red instead of black.

The word onyx is a Greek word, which means nail or claw. According to legend, Cupid the God of love, cut the fingernails of Venus the Goddess of beauty, with an arrowhead while she was sleeping. He left the clippings scattered on the sand and the nails turned into black stone which is believed to be onyx.

Onyx was very popular with the ancient Greeks and Romans. Onyx is particularly cherished for its positive effect on the wearer of the gemstone.

This gemstone is available in plenty in Mexico. Deposits of onyx are also present in Brazil, Madagascar, India, Algeria and Pakistan.

Onyx Trivia

• It is believed to be a stone which provides guidance to the wearer.
   
• Onyx gemstone is believed to be in tune with the Earth's energies which helps in balancing the Yin and Yang.
   
• It is a stone that protects against negative forces and influences.