RO-TISP024BY-002-322

Natural orangey yellow sphene - 4.974 ct - rough gemstone - for faceting

Certificate: RO-TISP024BY-002-322

Gem Type: Natural Titanite mineral Sphene

Weight: 4.974 Carat

Shape: Rough

Size: 10.2 x 7.8 x 6.5 mm.

Color: Greenish 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
Refractive index : 1.843-2.110
Specific gravity : 3.45-3.55

COMMENTS :

No indications of heating - No indications of treatment