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Cryolite
Cryolite

Wulfenite
Wulfenite



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Cryolite
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Wulfenite

Cryolite and Wulfenite Optical Properties

Optical Properties

Luster

Vitreous, Greasy, Pearly
Adamantine, Resinous

Pleochroism

colorless.
Weak

Dispersion

0.010.03
0.005 1
👆🏻

Transparency

-
Transparent

Refractive Index

1.338-1.3392.280-2.405
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
tetragonal

Birefringence

0.0010.122
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Cryolite and Wulfenite Optic Character

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

Cryolite and Wulfenite Transparency

Similar to their colors, Cryolite and Wulfenite 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, Cryolite is while Cryolite is in appearance.