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Kunzite
Kunzite

Sugilite
Sugilite



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Kunzite
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Sugilite

Kunzite and Sugilite Optical Properties

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Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

Strong trichroism: colorless pink violetHerve Nicolas Lazzarelli
Weak

Dispersion

0.020.02
0.005 1
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Transparency

Transparent
Translucent

Refractive Index

1.657-1.6811.607-1.612
1 3.25
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Optic Character

-
-

Crystal System

monoclinic
Hexagonal

Birefringence

0.014-0.0160.003
0 0.296
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Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Translucent

Kunzite and Sugilite Optic Character

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

Kunzite and Sugilite Transparency

Similar to their colors, Kunzite 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, Kunzite is Transparent while Kunzite is Transparent in appearance.