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Fire Opal
Fire Opal

Charlesite
Charlesite



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Fire Opal
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Charlesite

Fire Opal and Charlesite Optical Properties

Optical Properties

Luster

-
Vitreous

Pleochroism

-
Nearly colorless to pale golden yellow

Dispersion

0.010.03
0.005 1
👆🏻

Transparency

Transparent, Translucent
-

Refractive Index

1.370-1.4701.492
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Trigonal

Birefringence

-9999-9999
0 0.296
👆🏻

Clarity

Transparent
-

Fire Opal and Charlesite Optic Character

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

Similar to their colors, Fire Opal and Charlesite 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.