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Fire Opal
Fire Opal

Scheelite
Scheelite



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Fire Opal
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Scheelite

Fire Opal and Scheelite Optical Properties

Optical Properties

Luster

-
Vitreous, Adamantine

Pleochroism

-
Definite dichoric in yellow (yellow to orange-brown)

Dispersion

0.010.04
0.005 1
👆🏻

Transparency

Transparent, Translucent
Translucent, Transparent

Refractive Index

1.370-1.4701.918-1.936
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
tetragonal

Birefringence

-99990.016
0 0.296
👆🏻

Clarity

Transparent
Translucent

Fire Opal and Scheelite Optic Character

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

Similar to their colors, Fire Opal and Scheelite 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.