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Fire Opal
Fire Opal

Cavansite
Cavansite



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Fire Opal
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Cavansite

Fire Opal and Cavansite Optical Properties

Optical Properties

Luster

-
Vitreous, Pearly

Pleochroism

-
Visible: X=Z= colorless Y= blue

Dispersion

0.010.04
0.005 1
👆🏻

Transparency

Transparent, Translucent
-

Refractive Index

1.370-1.4701.542
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Orthorhombic

Birefringence

-99990.009
0 0.296
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Clarity

Transparent
-

Fire Opal and Cavansite Optic Character

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

Similar to their colors, Fire Opal and Cavansite 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.