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Sillimanite
Sillimanite

Chrome Diopside
Chrome Diopside



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Sillimanite
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Chrome Diopside

Sillimanite and Chrome Diopside Optical Properties

Optical Properties

Luster

Vitreous, Subadamantine, Silky
Vitreous

Pleochroism

Colourless to pale brown to yellow
Common trichroism: light green

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

Transparent, Translucent
-

Refractive Index

1.653-1.6851.668-1.703
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
monoclinic

Birefringence

0.020-0.0220.024-0.030
0 0.296
👆🏻

Clarity

Transparent
-

Sillimanite and Chrome Diopside Optic Character

Sillimanite and Chrome Diopside optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Sillimanite and Chrome Diopside Physical Properties like crystallographic symmetry, pleochroism,etc. in the crystal. Some of the optical properties are refractive index, luster, optic character, pleochroism etc. Prominent among these is Sillimanite and Chrome Diopside optic character. You might have noticed your gemologist rotating the gemstone while testing it. Rotating a gemstone along its optic axis helps in determining its optic character.

Sillimanite and Chrome Diopside Transparency

Similar to their colors, Sillimanite and Chrome Diopside transparency can also be used as criteria for their primary identification. Although transparency cannot be the only criteria for gemstone identification, it can efficiently used in gemstone grading. Talking about their transparency, Sillimanite is Transparent and Translucent while Sillimanite is Transparent and Translucent in appearance.