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Scheelite
Scheelite

Topaz
Topaz



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Scheelite
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Topaz

Scheelite and Topaz Optical Properties

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Optical Properties

Luster

Vitreous, Adamantine
Vitreous

Pleochroism

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

Dispersion

0.040.01
0.005 1
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Transparency

Translucent, Transparent
Transparent

Refractive Index

1.918-1.9361.606-1.644
1 3.25
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Optic Character

-
-

Crystal System

tetragonal
Orthorhombic

Birefringence

0.0160.008-0.011
0 0.296
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Clarity

Translucent
TransparentUlrich Henn and Claudio C. Milisenda

Scheelite and Topaz Optic Character

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

Scheelite and Topaz Transparency

Similar to their colors, Scheelite and Topaz 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, Scheelite is Translucent and Transparent while Scheelite is Translucent and Transparent in appearance.