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Alunite
Alunite

Ceylonite
Ceylonite



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Alunite
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Ceylonite

Alunite and Ceylonite Optical Properties

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Optical Properties

Luster

Vitreous, Pearly
Vitreous

Pleochroism

-
Absent

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

-
Transparent, Translucent

Refractive Index

1.5721.770-1.780
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
Isometric

Birefringence

0.020-9999
0 0.296
👆🏻

Clarity

-
Transparent

Alunite and Ceylonite Optic Character

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

Alunite and Ceylonite Transparency

Similar to their colors, Alunite and Ceylonite 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, Alunite is while Alunite is in appearance.