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Kunzite
Kunzite

Thulite
Thulite



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Kunzite
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Thulite

Kunzite and Thulite Optical Properties

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Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

Strong trichroism: colorless pink violetHerve Nicolas Lazzarelli
Present

Dispersion

0.020.02
0.005 1
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Transparency

Transparent
Opaque, Translucent, Opaque . May be translucent in thin backlit sections.

Refractive Index

1.657-1.6811.695
1 3.25
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Optic Character

-
-

Crystal System

monoclinic
Orthorhombic

Birefringence

0.014-0.0160.006-0.018
0 0.296
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Clarity

TransparentUlrich Henn and Claudio C. Milisenda
OpaqueHerve Nicolas Lazzarelli

Kunzite and Thulite Optic Character

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

Similar to their colors, Kunzite and Thulite 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.