Other than the greater generic and generally used gemstones such as from diamonds, rubies, sapphires, and emeralds, pearls and opal[24] have also been outlined as precious from the jewellery trade. Up towards the discoveries of bulk amethyst in Brazil inside the 19th century, amethyst was regarded a "precious stone" likewise, https://benefits-of-wearing-ruby17395.pages10.com/the-greatest-guide-to-who-can-wear-yellow-sapphire-62507069