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Turquoise
Turquoise

Cryolite
Cryolite



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Turquoise
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Cryolite

Turquoise and Cryolite Optical Properties

Optical Properties

Luster

Waxy
Vitreous, Greasy, Pearly

Pleochroism

Weak
colorless.

Dispersion

0.030.01
0.005 1
👆🏻

Transparency

Translucent, Opaque
-

Refractive Index

1.610-1.6501.338-1.339
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Triclinic
monoclinic

Birefringence

0.0400.001
0 0.296
👆🏻

Clarity

Translucent
TransparentUlrich Henn and Claudio C. Milisenda

Turquoise and Cryolite Optic Character

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

Turquoise and Cryolite Transparency

Similar to their colors, Turquoise and Cryolite 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, Turquoise is Translucent and Opaque while Turquoise is Translucent and Opaque in appearance.