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Schorl
Schorl

Cavansite
Cavansite



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Schorl
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Cavansite

Schorl and Cavansite Optical Properties

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Optical Properties

Luster

Vitreous
Vitreous, Pearly

Pleochroism

Very strong: yellow-brown pale yellow
Visible: X=Z= colorless Y= blue

Dispersion

0.020.04
0.005 1
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Transparency

Transparent, Translucent
-

Refractive Index

1.635-1.6721.542
1 3.25
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Optic Character

-
-

Crystal System

-
Orthorhombic

Birefringence

0.0250.009
0 0.296
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Clarity

Transparent
-

Schorl and Cavansite Optic Character

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

Schorl and Cavansite Transparency

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