RO-TISP024BG-002-195

Natural brownish yellow sphene - 3.579 ct - rough gemstone - for faceting - unheated

Certificate: RO-TISP024BG-002-195

Gem Type: Natural Titanite mineral Sphene

Weight: 3.579 Carat

Shape: Rough

Size: 11.6 x 8.5 x 4.1 mm.

Color: brownish yellow

Clarity: Transparent

Luster: N/A

Treatment: unheated, untreated

Birefringence : 0.100-0.192.
Cleavage : Distinct 1 direction
Crystallography : Monoclinic
Dispersion : 0.051 (strong)
Hardness : 5- 5.5
Inclusions : feathers
Refractive index : 1.843-2.110
Specific gravity : 3.45-3.55

COMMENTS :

No indications of heating - No indications of treatment
fluorescence under ultraviolet light.