FA-DIOP024RA-001-001
Natural Gems Belgium Colored Stone Certification FA-DIOP024RA-001-001
IDENTIFICATION : Natural black 4 ray star diopside - 3.79 ct - oval - unheated
Species : Natural Pyroxene
Variety : Diopside
DESCRIPTION
Shape & Cutting Style : Oval, polished one side, cut flat side
Measurements : 10.0 x 8.0 x 4.8 mm
Carat Weight : 3.79 Carat
Color : black
Clarity : comparable to I1
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 Natural black 4 ray star diopside, weighing 3.79 ct, showcases a stunning oval shape. It is unheated and natural. With its unique asterism, consisting of 4 rays, can be seen clearly in grey lines. It displays asterism even in sunlight (normally incandescent light needed), while appearing as a black gemstone in normal lighting. The polish is of high quality, with fair to good symmetry and good luster.
