Rough tourmaline - for faceting or rough gemstone jewelry - 1.739 ct - bluish green

Certificate: RO-TOUR025BG-002-433

Gem Type: Tourmaline

Weight: 1.739 Carat

Shape: Rough

Size: 9.0 x 4.6 x 4.0 mm.

Color: Bluish green (indicolite) (deep color)

Clarity: Transparent

Luster: N/A

Treatment: Unheated Untreated

Birefringence : 0.020
Crystallography : Hexagonal (trigonal)
Dispersion : 0.017
Luster : Vitreous
Hardness : 7
Refractive index : 1.62 to 1.64
Specific gravity : 3.02 to 3.26

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