What Are the Uses for the Gemstone Ruby?
Definition Rubies are red gemstones formed from corundum, which is made up of aluminum, iron, and small bits of chromium and titanium. Sapphires are also formed from corundum and come in a variety of colors and sizes. Only red sapphires are referred to as rubies, however, which gives them a unique classification all their own. Rubies are also extremely hard, in second place behind diamonds as the hardest gemstone that occurs in nature. Jewelry The first and most popular use for rubies is as decoration, in rings, earrings, bracelets, and necklaces. Because of their rarity, value, and color, rubies are often prominently displayed in the crown jewels of royalty. Even artificial rubies, which are formed in a laboratory, are often in demand due to the association of the stone with wealth. Lasers Some of the first laser technology used artificial ruby crystals as the focusing source for the light. This is still the case, though many other gems, including the ruby’s cousin sapphire, are now u
