5.72 ct big very rare natural grandidierite gemstone

Product No: 1912gra0001
Stone Type: Natural Grandidierite
Shape: Oval
Total Weight: 5.72 Carats
Size (mm): 11x10.3x6.9mm
Color: Green/Blue
Clarity: PK
Luster: Good
Hardness: 7.5
Treatment: Natural/Untreated
Origin: Madagascar