Articles related to "Red Corundum"

The element chromium yields ruby's pink-to-red pigmentation. Found in crystal in metamorphic rock., its hardness of 9; only a diamond's 10 rating exceeds it s durability.

Sapphires are famed the world over for their royal blue color... but purple, yellow, pink, green, white, color-changing and star sapphires set the blue gem in a new light

Although blue is the colour usually associated with sapphires, this gemstone is available in several different colours and a variety of different styles.