RO-TISP024BG-002-195
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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.