Amethyst Cabochons for Jewelry making. Amethyst is a form of quartz, getting its color from impurities. Prior to the 17th century it was considered as valuable as diamonds or emeralds but since then lots of deposits have been found all over the world. It has a long history in the jewelry industry being worn by the Greeks to supposedly prevent you from becoming intoxicated. Today its spiritual and healing powers are supposed to be as a natural tranquilizer, it relieves stress and strain, soothes irritability, balances mood swings, dispels anger, rage, fear and anxiety. Alleviates sadness and grief, and dissolves negativity.