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Cat s Eye
Cat s Eye

Polyhalite
Polyhalite



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Cat s Eye
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Polyhalite

Cat s Eye and Polyhalite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous, Resinous

Pleochroism

-
-

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

Translucent
-

Refractive Index

1.744-1.7551.546-1.548
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
Triclinic

Birefringence

-99990.021
0 0.296
👆🏻

Clarity

Translucent
-

Cat s Eye and Polyhalite Optic Character

Cat s Eye and Polyhalite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Cat s Eye and Polyhalite 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 Cat s Eye and Polyhalite 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.

Cat s Eye and Polyhalite Transparency

Similar to their colors, Cat s Eye and Polyhalite 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, Cat s Eye is Translucent while Cat s Eye is Translucent in appearance.