FA-DIOP024RA-001-002
Natural Gems Belgium Colored Stone Certification FA-DIOP024RA-001-002
IDENTIFICATION : Natural black 4 ray star diopside - 2.12 ct - oval - unheated
Species : Natural Pyroxene
Variety : Diopside
DESCRIPTION
Shape & Cutting Style : Oval, polished one side, cut flat side
Measurements : 8.0 x 6.0 x 4.4 mm
Carat Weight : 2.12 Carat
Color : black
Clarity : comparable to I2
Transparency : Opaque
Birefringence : 0.024-0.032
Crystallography : Monoclinic
Dispersion : 0.017-0.020
Luster : Vitreous
Hardness : 6
Refractive index : 1.664-1.751
Specific gravity : 3.29
COMMENTS :
No indications of heating, no indications of any other treatment
Asterism : 4 ray star (clear)
Personal Note From Natural Gems Belgium:
This 2.12 ct unheated Natural black 4 ray star diopside boasts a striking oval shape, featuring a rare asterism that presents itself as 4 grey lines. Its distinctive asterism can be seen at certain angles, displaying a double horizontal line, while appearing black under normal lighting. The gemstone is polished to a high quality and exhibits fair to good symmetry and good luster.
