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Fire Opal
Fire Opal

Cat s Eye
Cat s Eye



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Fire Opal
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Cat s Eye

Fire Opal and Cat s Eye Optical Properties

Optical Properties

Luster

-
Vitreous

Pleochroism

-
-

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

Transparent, Translucent
Translucent

Refractive Index

1.370-1.4701.744-1.755
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Orthorhombic

Birefringence

-9999-9999
0 0.296
👆🏻

Clarity

Transparent
Translucent

Fire Opal and Cat s Eye Optic Character

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

Similar to their colors, Fire Opal and Cat s Eye 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.