FA-TISP024BY-002-199

Natural Gems Belgium Colored Stone Certification FA-TISP024BY-002-199

IDENTIFICATION : Natural honey yellow shpene - 1.898 ct - cushion - unheated

Species : Natural Titanite mineral
Variety : Sphene

DESCRIPTION

Shape & Cutting Style : Cushion, Mixed cut
Measurements : 7.2 x 7.2 x 4.5 mm
Total Carat Weight : 1.898 carat
Color : honey yellow  
Clarity : I2
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
Inclusions : feathers
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:

This square cushion cut gemstone its cut grade is good, symmetry is good, and polish is good, given its level of difficulty exceptional. The luster is also good and adamantine is fair