RO-TOUR025BG-002-445

Certificate: RO-TOUR025BG-002-445

Gem Type: Tourmaline

Weight: 2.478 Carat

Shape: Rough

Size: 7.5 x 5.5 x 5.4 mm.

Color:  deep green

Clarity: Transparent

Luster: N/A

Treatment: Unheated Untreated

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