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Sugilite
Sugilite

Charlesite
Charlesite



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Sugilite
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Charlesite

Sugilite and Charlesite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

Weak
Nearly colorless to pale golden yellow

Dispersion

0.020.03
0.005 1
👆🏻

Transparency

Translucent
-

Refractive Index

1.607-1.6121.492
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
Trigonal

Birefringence

0.003-9999
0 0.296
👆🏻

Clarity

Translucent
-

Sugilite and Charlesite Optic Character

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

Similar to their colors, Sugilite and Charlesite 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.