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Black Opal
Black Opal

Chrome Pyrope
Chrome Pyrope



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Black Opal
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Chrome Pyrope

Black Opal and Chrome Pyrope Optical Properties

Optical Properties

Luster

-
-

Pleochroism

-
-

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

Transparent, Translucent
-

Refractive Index

1.370-1.4701.720-1.740
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
-

Birefringence

-9999-9999
0 0.296
👆🏻

Clarity

Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Black Opal and Chrome Pyrope Optic Character

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

Similar to their colors, Black Opal and Chrome Pyrope 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.