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Scheelite
Scheelite

Thomsonite
Thomsonite



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Scheelite
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Thomsonite

Scheelite and Thomsonite Optical Properties

Optical Properties

Luster

Vitreous, Adamantine
Vitreous, Pearly

Pleochroism

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

Dispersion

0.040.01
0.005 1
👆🏻

Transparency

Translucent, Transparent
Translucent

Refractive Index

1.918-1.9361.510-1.550
1 3.25
👆🏻

Optic Character

-
-

Crystal System

tetragonal
Orthorhombic

Birefringence

0.0160.015-0.020
0 0.296
👆🏻

Clarity

Translucent
Translucent

Scheelite and Thomsonite Optic Character

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

Similar to their colors, Scheelite and Thomsonite 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.