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Cryolite
Cryolite

Eosphorite
Eosphorite



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Cryolite
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Eosphorite

Cryolite and Eosphorite Optical Properties

Optical Properties

Luster

Vitreous, Greasy, Pearly
Vitreous, Resinous

Pleochroism

colorless.
Visible: X = yellow; Y = pink; Z = pale pink to colorless

Dispersion

0.010.01
0.005 1
👆🏻

Transparency

-
Transparent

Refractive Index

1.338-1.3391.639-1.672
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
Orthorhombic

Birefringence

0.0010.029-0.032
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Cryolite and Eosphorite Optic Character

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

Similar to their colors, Cryolite and Eosphorite 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.