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Cavansite
Cavansite

Tanzanite
Tanzanite



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Cavansite
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Tanzanite

Cavansite and Tanzanite Optical Properties

Optical Properties

Luster

Vitreous, Pearly
Vitreous

Pleochroism

Visible: X=Z= colorless Y= blue
Present

Dispersion

0.040.03
0.005 1
👆🏻

Transparency

-
Transparent, Translucent, Transparent to translucent

Refractive Index

1.5421.685-1.707
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
Orthorhombic

Birefringence

0.0090.006-0.018
0 0.296
👆🏻

Clarity

-
TransparentUlrich Henn and Claudio C. Milisenda

Cavansite and Tanzanite Optic Character

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

Cavansite and Tanzanite Transparency

Similar to their colors, Cavansite and Tanzanite 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, Cavansite is while Cavansite is in appearance.