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Fire Opal
Fire Opal

Tantalite
Tantalite



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Fire Opal
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Tantalite

Fire Opal and Tantalite Optical Properties

Optical Properties

Luster

-
Resinous

Pleochroism

-
-

Dispersion

0.010.03
0.005 1
👆🏻

Transparency

Transparent, Translucent
TransparentWalter Schumann

Refractive Index

1.370-1.4702.190-2.457
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Orthorhombic

Birefringence

-99990.083
0 0.296
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Clarity

Transparent
TransparentWalter Schumann

Fire Opal and Tantalite Optic Character

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

Similar to their colors, Fire Opal and Tantalite 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.