An Amethyst stone 3 carat weighs around 0.6 grams (0.54 gms for ratti) and is a purple color semi precious stone known to bring protection from evil energy and positivity to the life of the wearer. Being related to the Planet Saturn, it is considered the Upratna in Vedic Astrology. A Jamunia stone 3.25 carat is especially suggested to relieve Karmic deeds and fills the monetary or material emptiness in the life of the wearer. The 3 carat amethyst stone price ranges from INR 3000-10000, depending on factors like cut, color, clarity, and origin, besides the weight. The purple stone with red and blue tints brings more clarity and is priced higher as compared to others.