2.55 ct rare untreated natural genuine star sapphire

Product No: 2010sap0013
Stone Type: Natural Sapphire
Shape: Oval
Total weight: 2.55 carats
Size (mm): 8.5x7.3x3.7mm
Colour: Black
Clarity: PK
Star Effect: Very Good
Hardness: 9
Treatment: Natural/Untreated
Origin: Thailand