RO-TOUR025BG-002-442

Certificate: RO-TOUR025BG-002-442

Gem Type: Tourmaline

Weight: 2.429 Carat

Shape: Rough

Size: 8.7 x 8.2 x 4.1 mm.

Color: clear greenish blue

Clarity: Transparent

Luster: N/A

Treatment: Unheated Untreated

Birefringence : 0.020
Crystallography : Hexagonal (trigonal)
Dispersion : 0.017
Luster : Vitreous
Hardness : 7