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Cryolite
Cryolite

Steatite
Steatite



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Cryolite
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Steatite

Cryolite and Steatite Optical Properties

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Optical Properties

Luster

Vitreous, Greasy, Pearly
-

Pleochroism

colorless.
-

Dispersion

0.010.01
0.005 1
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Transparency

-
-

Refractive Index

1.338-1.3391.539-1.596
1 3.25
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Optic Character

-
-

Crystal System

monoclinic
-

Birefringence

0.0010.046-0.050
0 0.296
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Clarity

TransparentUlrich Henn and Claudio C. Milisenda
OpaqueUlrich Henn and Claudio C. Milisenda

Cryolite and Steatite Optic Character

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

Similar to their colors, Cryolite and Steatite 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.