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Prasiolite
Prasiolite

Cavansite
Cavansite



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Prasiolite
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Cavansite

Prasiolite and Cavansite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous, Pearly

Pleochroism

Very weak: light green pale greenWalter Schumann
Visible: X=Z= colorless Y= blue

Dispersion

0.010.04
0.005 1
👆🏻

Transparency

Transparent, Translucent
-

Refractive Index

1.544-1.5531.542
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
Orthorhombic

Birefringence

0.0090.009
0 0.296
👆🏻

Clarity

Transparent
-

Prasiolite and Cavansite Optic Character

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

Prasiolite and Cavansite Transparency

Similar to their colors, Prasiolite and Cavansite 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, Prasiolite is Transparent and Translucent while Prasiolite is Transparent and Translucent in appearance.