FA-TISP026BY-003-231

Natural sphene - 1.010 ct - cushion - unheated- greenish brownish yellow

Natural Gems Belgium Colored Stone Certification FA-TISP026BY-003-231

IDENTIFICATION

Species : Natural Titanite mineral
Variety : Sphene

DESCRIPTION

Shape & Cutting Style : cushion, mixed cut
Measurements : 5.9 x 5.0 x 3.9 mm
Total Carat Weight : 1.010 carat
Color : honey yellow  
Clarity : I
Transparency : Transparent
Luster:  Adamantine  (difficult to polish)
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
Strong dispersion rate 

Personal Note From Natural Gems Belgium:

color : good
Clarity : poor to fair
Cut : Good
Polish : Poor
Fire : fair