YELLOW SAPPHIRE : This is the name given to the yellow variety of Corundum. It was formerly known as "Oriental Topaz". All varieties of Corundum , except the red variety is known as Sapphire. Like all other, the yellow type can be distinguished from the rest by its lustre. The yellow colour is not found in any other gem except citrine which is rather less lustrous. The Hindi Name for this Gemstone is "PUKHRAJ".

Appearance : Yellow Sapphire may occur in quite a wide range of colours, from pale yellow to gold, honey and brownish yellow colour. The lighter, brighter colours are the most common. Like all other, the yellow type can be distinguished from the rest by its lustre. The yellow colour is not found in any other gem except citrine which is rather less lustrous.

Occurrence : This Gem is found in the Metamorphic or Pegmetite Occurrences. Most Yellow Sapphires come from Sri Lanka, Burma, Australia, Thailand and U.S.A (Montana).

Substitutes : The most common substitutes of this gem are Topaz, Citrine, Synthetic Yellow Sapphire and Yellow Glass.

Chemical Composition : ALUMINIUM OXIDE.