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Gypsum
Gypsum

Scheelite
Scheelite



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Gypsum
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Scheelite

Gypsum and Scheelite Optical Properties

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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous, Silky, Pearly, Waxy
None
0.01
Transparent, Translucent
1.521-1.531
-
monoclinic
0.010
Transparent
 
Vitreous, Adamantine
Definite dichoric in yellow (yellow to orange-brown)
0.04
Translucent, Transparent
1.918-1.936
-
tetragonal
0.016
Translucent

Gypsum and Scheelite Optic Character

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

Gypsum and Scheelite Transparency

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