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Black Opal
Black Opal

Kunzite
Kunzite



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Black Opal
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Kunzite

Black Opal and Kunzite Optical Properties

Optical Properties

Luster

-
Vitreous

Pleochroism

-
Strong trichroism: colorless pink violetHerve Nicolas Lazzarelli

Dispersion

0.010.02
0.005 1
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Transparency

Transparent, Translucent
Transparent

Refractive Index

1.370-1.4701.657-1.681
1 3.25
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Optic Character

-
-

Crystal System

-
monoclinic

Birefringence

-99990.014-0.016
0 0.296
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Clarity

Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Black Opal and Kunzite Optic Character

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

Black Opal and Kunzite Transparency

Similar to their colors, Black Opal and Kunzite 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, Black Opal is Transparent and Translucent while Black Opal is Transparent and Translucent in appearance.