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Scheelite and Chrome-Chalcedony Optical Properties


Chrome-Chalcedony and Scheelite Optical Properties


Optical Properties

Luster
Vitreous, Adamantine  
Waxy  

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

Dispersion
0.04  
36
0.01  
99+

Transparency
Translucent, Transparent  
Translucent  

Refractive Index
1.918-1.936  
1.530-1.543  

Optic Character
-  
-  

Crystal System
tetragonal  
-  

Birefringence
0.016  
0.003-0.009  

Clarity
Translucent  
Translucent  

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Scheelite and Chrome-Chalcedony Optic Character

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

Similar to their colors, Scheelite and Chrome-Chalcedony 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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