RO-PREH024GR-001-110

Natural green Prehnite - 15.02 ct - Rough Gemstone - unheated

Certificate : RO-PREH024GR-001-110

Gem Type: Prehnite

Weight: 15.02 Carat

Shape: Rough

Size: 17.4 x 14.2 x 9.4 mm.

Color: clear green (yellowish)

Clarity: Semi-Translucent

Luster: N/A

Treatment: Unheated Untreated

Birefringence : 0.021-0.033
Crystallography : Orthorhombic
Dispersion : weak
Luster : Vitreous
Hardness : 6-6.5
Refractive index : 1.611-1.665
Specific gravity : 2.80-3.00

COMMENTS :

No indications of heating, no indications of any other treatment