The 8 carat amethyst stone weighs around 1.6 gms (1.44 gms approx for Jamunia stone 8.5 ratti) and is a purple shade semi-precious stone ranking 7 on the Mohs Hardness scale. The 8 carat amethyst value is significant in Vedic astrology. Associated with the Planet Saturn, it is worn to get relief from Karmic troubles, and treats nervousness, misery, and sleep deprivation. The amethyst stone price 8 rattis ranges between INR 5000-50000, depending on factors like cut, color, clarity, and origin, besides the weight. The Brazilian amethyst stones are more expensive than the African ones because of their quality and rarity.