amethyst is a violet variety of quartz. the name comes from a greek word, a refered to the belief that the stone protected its owner from drunkenness. the ancient greeks wore amethyst and carved drinking vessels from it in the belief that it would prevent intoxication.
diamond is one of the best-known and most sought-after gemstones. they have been used as decorative items since ancient times. in the middle ages, the gemstone was considered a stone that could provide healing powers, curing depression and opening the heart.
Hematite is one of the most abundant minerals found on the earth's surface and in shallow crust. Hematite is a type of iron oxide with the chemical composition Fe2O3. This rock is a common rock-forming mineral that is often found in sedimentary, metamorphic and igneous rocks.