4.15 ct very rare natural untreated star sapphire

Product No: 1012sap0016
Stone Type: Natural Sapphire
Shape: Oval
Total weight: 4.15 carats
Size (mm): 9.8x8.2x5.1mm
Color: Silver/Blue
Clarity: PK
Star Effect: Very Good
Hardness: 9
Treatment: Natural/Untreated
Origin: Ceylon, Sri Lanka