Gemstone family: Quartz
Colours: Black, Brown, Red, White
Moth hardness: 6.5 -7
Ground locations: India, Madagascar, South America
Onyx is associated with a wonderful myth. While Venus was sleeping, Cupid would have cut her divine fingernails with one of his arrowheads and scattered the pieces on the floor. But because not a single part of a heavenly body should perish, the goddess of fate turned them into stones, known thereafter as Onyx.