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Sugilite
Sugilite

Kainite
Kainite



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Sugilite
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Kainite

Sugilite and Kainite Optical Properties

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Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

Weak
Visible: X = violet

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

Translucent
-

Refractive Index

1.607-1.6121.494
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
monoclinic

Birefringence

0.0030.022
0 0.296
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Clarity

Translucent
-

Sugilite and Kainite Optic Character

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

Sugilite and Kainite Transparency

Similar to their colors, Sugilite and Kainite 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, Sugilite is Translucent while Sugilite is Translucent in appearance.