RO-TISP024BG-002-197

Natural greenish brownish yellow sphene - 4.555 ct - rough gemstone - for faceting - high fire posibilities

Certificate: RO-TISP024BG-002-197

Gem Type: Natural Titanite mineral Sphene

Weight: 4.555 Carat

Shape: Rough

Size: 10.7 x 8.3 x 6.3 mm.

Color: greenish brownish yellow

Clarity: Translucent

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.