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Bytownite
Bytownite

Sugilite
Sugilite



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Bytownite
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Sugilite

Bytownite and Sugilite Optical Properties

Optical Properties

Luster

Vitreous, Pearly
Vitreous

Pleochroism

colorless.
Weak

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

Transparent
Translucent

Refractive Index

1.561-1.5831.607-1.612
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Triclinic
Hexagonal

Birefringence

0.010-0.0110.003
0 0.296
👆🏻

Clarity

Transparent
Translucent

Bytownite and Sugilite Optic Character

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

Bytownite and Sugilite Transparency

Similar to their colors, Bytownite and Sugilite 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, Bytownite is Transparent while Bytownite is Transparent in appearance.