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Sugilite
Sugilite

Wulfenite
Wulfenite



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Sugilite
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Wulfenite

Sugilite and Wulfenite Optical Properties

Optical Properties

Luster

Vitreous
Adamantine, Resinous

Pleochroism

Weak
Weak

Dispersion

0.020.03
0.005 1
👆🏻

Transparency

Translucent
Transparent

Refractive Index

1.607-1.6122.280-2.405
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
tetragonal

Birefringence

0.0030.122
0 0.296
👆🏻

Clarity

Translucent
Transparent

Sugilite and Wulfenite Optic Character

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

Similar to their colors, Sugilite and Wulfenite 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.