Onyx is a variety of agate, which belongs to the family of Chalcedony. The name is once again, of Greek origin, refers to the streaks that appear on the claws of several animals. Theophrastus mentions it as onychion. It displays successive layers of light and dark material. The various varieties of onyx display the entire color palette. In fact when we say Onyx we usually mean the black one with white lines. It has a hardness of 6-7 on the Mohs scale. Onyx mines exist in Oahaca in Mexico, in Brazil, Algeria, Madagascar, India.
Onyx, according to tradition, gives strength. It promotes vigor, steadfastness and stamina. Onyx banishes grief, enhances self-control and stimulates the power of wise decision-making. It encourages happiness and good fortune. It is beneficial for teeth and the feet.
Zodiac: Aries, Capricorn.