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Scheelite
Scheelite

Gypsum
Gypsum



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Scheelite
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Gypsum

Scheelite and Gypsum Optical Properties

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Optical Properties

Luster

Vitreous, Adamantine
Vitreous, Silky, Pearly, Waxy

Pleochroism

Definite dichoric in yellow (yellow to orange-brown)
None

Dispersion

0.040.01
0.005 1
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Transparency

Translucent, Transparent
Transparent, Translucent

Refractive Index

1.918-1.9361.521-1.531
1 3.25
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Optic Character

-
-

Crystal System

tetragonal
monoclinic

Birefringence

0.0160.010
0 0.296
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Clarity

Translucent
Transparent

Scheelite and Gypsum Optic Character

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

Similar to their colors, Scheelite and Gypsum 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.