Yellow Sapphire

Up until the end of the 19th century yellow sapphire was known as oriental topaz (only blue corundum was called sapphire). Nevertheless yellow and greenish yellow sapphires make unusual and attractive gemstones in their own right.

In Queensland and New South Wales (Australia), a greenish yellow sapphire is found that may be faceted. Similar stones occurs in Thailand, and purely yellow stones in Sri Lanka, Montana (USA), and East Africa.







Yellow Sapphire Properties

Chemical Composition: 
Aluminium oxide
Crystal System / Forms: 
Trigonal
Hardness: 
9
Specific Gravity: 
4.00
Lustre: 
Vitreous
Refractive Index / Birefringence: 
1.76-1.77 / 0.008
Cuts & Uses: 
Brilliant, Mixed.