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Amethyst
Amethyst

Cacoxenite
Cacoxenite



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Amethyst
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Cacoxenite

Amethyst and Cacoxenite Optical Properties

Optical Properties

Luster

Vitreous
Silky

Pleochroism

None
visible: O = Pale yellow E = Canary yellow to yellow orange

Dispersion

0.010.03
0.005 1
👆🏻

Transparency

Transparent, Transparent to translucent
-

Refractive Index

1.544-1.5531.575-1.585
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
Hexagonal

Birefringence

0.009-9999
0 0.296
👆🏻

Clarity

Transparent
-

Amethyst and Cacoxenite Optic Character

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

Similar to their colors, Amethyst and Cacoxenite 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.