Sapphire is a gem quality variety of the mineral corundum. It is the second hardest substance on earth after diamond, rating 9 on the Mohs scale of mineral hardness. Corundum itself is not a very rare mineral, but gem quality corundum is extremely rare.
Product Reviews
Sign Up For Our Newsletter
Keep up to date on our latest news, events and offers
Sign In
-1140x380.jpg)
