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Scheelite and Omphacite Optical Properties


Omphacite and Scheelite Optical Properties


Optical Properties

Luster
Vitreous, Adamantine  
Vitreous  

Pleochroism
Definite dichoric in yellow (yellow to orange-brown)  
Weak: colorless -- very pale green -- very pale green  

Dispersion
0.04  
36
0.02  
99+

Transparency
Translucent, Transparent  
TranslucentAnthony et al  

Refractive Index
1.918-1.936  
1.662-1.723  

Optic Character
-  
-  

Crystal System
tetragonal  
-  

Birefringence
0.016  
-9999  

Clarity
Translucent  
TranslucentAnthony et al  

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Scheelite and Omphacite Optic Character

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

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Scheelite and Omphacite Transparency

Similar to their colors, Scheelite and Omphacite 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.

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Yellow Gemstones


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