Rough tourmaline - for faceting or rough gemstone jewelry - 1.639 ct - deep green verdelite

Certificate: RO-TOUR025BG-002-437

Gem Type: Tourmaline

Weight: 1.639 Carat

Shape: Rough

Size: 9.0 x 4.5 x 4.1 mm.

Color: deep green verdelite

Clarity: Transparent

Luster: N/A

Treatment: Unheated Untreated

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

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