Chemical Composition: Silicon Dioxide, SiO 2
Refractive Index: 1.54 – 1.56
Specific Gravity: 2.65
Crystal System: Trigonal
Moh's Hardness: 7
Amethysts are apart of the Quartz family and the colour ranges from a very pale purple to a deep purple. The common localities include Brazil, India, Madagascar, Namibia, Sri Lanka, Nambia.