Besides the greater generic and typically applied gemstones which include from diamonds, rubies, sapphires, and emeralds, pearls and opal[24] have also been outlined as precious while in the jewellery trade. Up for the discoveries of bulk amethyst in Brazil in the nineteenth century, amethyst was viewed as a "precious stone" https://benefits-of-wearing-ruby94837.ka-blogs.com/79998025/emerald-stone-benefits-options