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Mexican fire opal
Mexican fire opal

Pollucite
Pollucite



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Mexican fire opal
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Pollucite

Mexican fire opal and Pollucite Optical Properties

Optical Properties

Luster

-
Vitreous, Greasy

Pleochroism

-
-

Dispersion

0.010.01
0.005 1
👆🏻

Transparency

-
Transparent, Translucent

Refractive Index

-99991.517-1.525
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Isometric

Birefringence

-9999-9999
0 0.296
👆🏻

Clarity

-
Transparent

Mexican fire opal and Pollucite Optic Character

Mexican fire opal and Pollucite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Mexican fire opal and Pollucite 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 Mexican fire opal and Pollucite 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.

Mexican fire opal and Pollucite Transparency

Similar to their colors, Mexican fire opal and Pollucite 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, Mexican fire opal is while Mexican fire opal is in appearance.