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Sugilite
Sugilite

Topazolite
Topazolite



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Sugilite
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Topazolite

Sugilite and Topazolite Optical Properties

Optical Properties

Luster

Vitreous
Subadamantine

Pleochroism

Weak
-

Dispersion

0.020.06
0.005 1
👆🏻

Transparency

Translucent
Transparent

Refractive Index

1.607-1.6121.855-1.895
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
-

Birefringence

0.003-9999
0 0.296
👆🏻

Clarity

Translucent
Transparent

Sugilite and Topazolite Optic Character

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

Similar to their colors, Sugilite and Topazolite 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.