Natural black 4 ray star diopside - 2.12 ct - oval - unheated - certified by NGB

Discover the exquisite allure of Natural black 4 ray star diopside - a radiant gem boasting a weight of 2.12 ct and an elegant oval shape. This unheated gem is certified by NGB, guaranteeing its natural authenticity and exceptional quality.

Natural Gems Belgium Colored Stone Certification FA-DIOP024RA-001-002

IDENTIFICATION

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

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. 

FIND THE ONLINE CERTIFICATE HERE

For impression take a look at the pictures, 

all items are sent insured with track and trace regardless of value