STAR SAPPHIRE TWIN STAR 2.48 CTS 18448 - RARE COLLECTORS GEM

STAR SAPPHIRE TWIN STAR 2.48 CTS 18448 - RARE COLLECTORS GEM

  • $99.00

Carats 2.48
Size 7.0 x 5.5 x 3.7mm
Color Medium Gray
Clarity Opaque
Shape Oval
Treatment None
Origin Sri Lanka
Location Colombo,Sri Lanka
Price $ 99.00
100% Natural - Not treated in any way.
Rare Collectors Gem.
Suitable for Museums,Institutions and Students of Gemology.
Will make a Gorgeous Ring or Pendent accented with Diamonds.
Double Star Sapphire - This Star Sapphire has multiple stars.This Rare feature is Called Poly Asterism.

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.