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Fire Opal
Fire Opal

Lazulite
Lazulite



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Fire Opal
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Lazulite

Fire Opal and Lazulite Optical Properties

Optical Properties

Luster

-
-

Pleochroism

-
Transparent crystals show a strong pleochroism: colorless light blue dark (violet) blueHerve Nicolas Lazzarelli

Dispersion

0.010.01
0.005 1
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Transparency

Transparent, Translucent
Transparent, Translucent

Refractive Index

1.370-1.4701.604-1.646
1 3.25
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Optic Character

-
-

Crystal System

-
monoclinic

Birefringence

-99990.031-0.036
0 0.296
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Clarity

Transparent
Transparent

Fire Opal and Lazulite Optic Character

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

Fire Opal and Lazulite Transparency

Similar to their colors, Fire Opal and Lazulite 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, Fire Opal is Transparent and Translucent while Fire Opal is Transparent and Translucent in appearance.