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Sugilite
Sugilite

Tavorite
Tavorite



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Sugilite
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Tavorite

Sugilite and Tavorite Optical Properties

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Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

Weak
Yellow-green colorlessAnthony et al

Dispersion

0.020.02
0.005 1
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Transparency

Translucent
Transparent

Refractive Index

1.607-1.6121
1 3.25
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Optic Character

-
-

Crystal System

Hexagonal
-

Birefringence

0.003-9999
0 0.296
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Clarity

Translucent
Transparent

Sugilite and Tavorite Optic Character

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

Similar to their colors, Sugilite and Tavorite 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.