FA-TISP024BY-002-200

Natural Gems Belgium Colored Stone Certification FA-TISP024BY-002-200

IDENTIFICATION : Natural greenish yellow shpene - 0.457 ct - oval - unheated

Species : Natural Titanite mineral
Variety : Sphene

DESCRIPTION

Shape & Cutting Style : oval, mixed cut
Measurements : 4.8 x 4.4 x 2.9 mm
Total Carat Weight : 0.457 carat
Color : greenish 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 oval 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 fair.