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Sugilite
Sugilite

Stolzite
Stolzite



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Sugilite
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Stolzite

Sugilite and Stolzite Optical Properties

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Optical Properties

Luster

Vitreous
Resinous, Subadamantine

Pleochroism

Weak
-

Dispersion

0.020.03
0.005 1
👆🏻

Transparency

Translucent
-

Refractive Index

1.607-1.6122.180-2.190
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
tetragonal

Birefringence

0.0030.090
0 0.296
👆🏻

Clarity

Translucent
-

Sugilite and Stolzite Optic Character

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

Similar to their colors, Sugilite and Stolzite 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.