Corundum - Wikipedia, the free encyclopedia Transparent specimens are used as gems, called ruby if red and ... The name " corundum" is derived from Tamil word Kuruvindam or Sanskrit word Kuruvinda ...
Corundum: The mineral Corundum, Sapphire, Ruby info & pictures Corundum is best known for its gem varieties, Ruby and Sapphire. Ruby and Sapphire are scientifically the same mineral but just different colors. Ruby is the red ...
