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Thomsonite
Thomsonite

Scheelite
Scheelite



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Thomsonite
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Scheelite

Thomsonite and Scheelite Optical Properties

Optical Properties

Luster

Vitreous, Pearly
Vitreous, Adamantine

Pleochroism

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

Dispersion

0.010.04
0.005 1
👆🏻

Transparency

Translucent
Translucent, Transparent

Refractive Index

1.510-1.5501.918-1.936
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
tetragonal

Birefringence

0.015-0.0200.016
0 0.296
👆🏻

Clarity

Translucent
Translucent

Thomsonite and Scheelite Optic Character

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

Thomsonite and Scheelite Transparency

Similar to their colors, Thomsonite 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, Thomsonite is Translucent while Thomsonite is Translucent in appearance.