Description

100% Natural - Not treated in any way.
Rare Colectors Gem.
Suitable for Museums,Institutions and Students of Gemology.
Beautiful sharp Star effect.
Among the Rarest of gemstones.

Refractive Index: 1.759-1.778
Hardness: 9
Chemical Comp: AL2O3
Density: 4.00
Crystal Group: Hexagonal
Star Sapphires display a 6 rayed star - By light reflecting
off the silky crystallizations of rutile inside called asterism.
Star Sapphires comes in a range of colors but the finer
Blues, Reds, Green yellow orange and
Padparaschas are extremely rare.
Some color-change Corundum also displays asterism,
and is called Color-change Star Sapphires.

Top-quality sapphires are extremely rare. Beauty, magnificent color, transparency, and durability are the main features. Color and asterism determines the value of a star sapphire. Sri Lanka is known for the finest and the largest sapphires in the world