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Amethyst
Amethyst

Cat s Eye
Cat s Eye



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Amethyst
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Cat s Eye

Amethyst and Cat s Eye Optical Properties

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

None
-

Dispersion

0.010.02
0.005 1
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Transparency

Transparent, Transparent to translucent
Translucent

Refractive Index

1.544-1.5531.744-1.755
1 3.25
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Optic Character

-
-

Crystal System

Trigonal
Orthorhombic

Birefringence

0.009-9999
0 0.296
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Clarity

Transparent
Translucent

Amethyst and Cat s Eye Optic Character

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

Amethyst and Cat s Eye Transparency

Similar to their colors, Amethyst and Cat s Eye 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, Amethyst is Transparent and Transparent to translucent while Amethyst is Transparent and Transparent to translucent in appearance.