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Topaz
Topaz

Scheelite
Scheelite



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Topaz
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Scheelite

Topaz and Scheelite Optical Properties

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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous
Weak
0.01
Transparent
1.606-1.644
-
Orthorhombic
0.008-0.011
TransparentUlrich Henn and Claudio C. Milisenda
 
Vitreous, Adamantine
Definite dichoric in yellow (yellow to orange-brown)
0.04
Translucent, Transparent
1.918-1.936
-
tetragonal
0.016
Translucent

Topaz and Scheelite Optic Character

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

Topaz and Scheelite Transparency

Similar to their colors, Topaz 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, Topaz is while Topaz is in appearance.