Polished Edge Amethyst Cluster Uniqueness Guaranteed: Every item is one-of-a-kind, making them ideal for all projects or designs. Avg Size Range: (0.5 Kilo to 2 Kilo) Sizes Vary Material Origin: (Brazil) Amethyst is a violet gemstone that forms when quartz containing significant iron impurities and other trace elements undergoes natural geological irradiation over long periods, altering its color. Color variations occur based on the amount of iron and the specific trace elements present in the original quartz. Custom Requests: Have specific preferences? Leave a message with your order, and we'll do our best to accommodate your requests if possible.