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Cavansite
Cavansite

Umbalite
Umbalite



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Cavansite
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Umbalite

Cavansite and Umbalite Optical Properties

Optical Properties

Luster

Vitreous, Pearly
-

Pleochroism

Visible: X=Z= colorless Y= blue
-

Dispersion

0.040.02
0.005 1
👆🏻

Transparency

-
TransparentGemdat.org

Refractive Index

1.5421.730-1.820
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
-

Birefringence

0.009-9999
0 0.296
👆🏻

Clarity

-
TransparentGemdat.org

Cavansite and Umbalite Optic Character

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

Similar to their colors, Cavansite and Umbalite 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.