Ruby Shaded Pink Rondelle Faceted Natural Beads 16 Inches strandsRuby is a pink to blood red colored gemstone, a variety of the mineral corundum (aluminum oxide). Other varieties of gem quality corundum are called sapphires. Ruby is one of the traditional cardinal gems, together with amethyst, sapphire, emerald, and diamond.[3] The word ruby comes from rubber, Latin for red. The color of a ruby is due to the element chromium. Rubies are thought to energize and balance, stimulate heart chakra and encourage a passion