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Kunzite
Kunzite

Umbalite
Umbalite



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Kunzite
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Umbalite

Kunzite and Umbalite Optical Properties

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Optical Properties

Luster

Vitreous
-

Pleochroism

Strong trichroism: colorless pink violetHerve Nicolas Lazzarelli
-

Dispersion

0.020.02
0.005 1
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Transparency

Transparent
TransparentGemdat.org

Refractive Index

1.657-1.6811.730-1.820
1 3.25
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Optic Character

-
-

Crystal System

monoclinic
-

Birefringence

0.014-0.016-9999
0 0.296
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Clarity

TransparentUlrich Henn and Claudio C. Milisenda
TransparentGemdat.org

Kunzite and Umbalite Optic Character

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

Similar to their colors, Kunzite and Umbalite 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.