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Shungite
Shungite

Prasiolite
Prasiolite



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Shungite
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Prasiolite

Shungite and Prasiolite Optical Properties

Optical Properties

Luster

-
Vitreous

Pleochroism

-
Very weak: light green pale greenWalter Schumann

Dispersion

0.010.01
0.005 1
👆🏻

Transparency

-
Transparent, Translucent

Refractive Index

-99991.544-1.553
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Trigonal

Birefringence

-99990.009
0 0.296
👆🏻

Clarity

-
Transparent

Shungite and Prasiolite Optic Character

Shungite and Prasiolite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Shungite and Prasiolite 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 Shungite and Prasiolite 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.

Shungite and Prasiolite Transparency

Similar to their colors, Shungite and Prasiolite 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, Shungite is while Shungite is in appearance.