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Sugilite
Sugilite

Bytownite
Bytownite



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Sugilite
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Bytownite

Sugilite and Bytownite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous, Pearly

Pleochroism

Weak
colorless.

Dispersion

0.020.01
0.005 1
👆🏻

Transparency

Translucent
Transparent

Refractive Index

1.607-1.6121.561-1.583
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
Triclinic

Birefringence

0.0030.010-0.011
0 0.296
👆🏻

Clarity

Translucent
Transparent

Sugilite and Bytownite Optic Character

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

Similar to their colors, Sugilite and Bytownite 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.