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Poudretteite
Poudretteite

Cavansite
Cavansite



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Poudretteite
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Cavansite

Poudretteite and Cavansite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous, Pearly

Pleochroism

Colorless
Visible: X=Z= colorless Y= blue

Dispersion

0.020.04
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.511-1.5321.542
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
Orthorhombic

Birefringence

0.0210.009
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
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Poudretteite and Cavansite Optic Character

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

Poudretteite and Cavansite Transparency

Similar to their colors, Poudretteite 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, Poudretteite is while Poudretteite is in appearance.