#rubyfacts

The corundum family includes rubies which are famous for their unique red color. It is composed of Aluminum Oxide (Al2O3) and gets its remarkable color due to the agent Chromium that exists in many forms and gives different shades. These qualities, luster, and rarity are bestowed upon rubies among the oldest and most precious gemstones. Top on the Mohs hardness scale hardness of 9, the rubies are very tough stones, making them extremely suited to an incredible piece of jewelry. Color, clarity, cut, and carat size of the stone determine value.