Sapphire is generally thought of as blue, blue corundum, however sapphire is the name given to all colours of the crystal corundum, other than red which is known as Ruby.

Birthstone for September and a Hardness of 9

6.45ct  Australian teal green colour change to purple grey, round   The colour of this sapphire is exceptionally rare, and at this size its unique. In natural light and most in-door lighting this sapphire is a lovely medium toned teal/green,...