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Scheelite and Ruby Optical Properties


Ruby and Scheelite Optical Properties


Optical Properties

Luster
Vitreous, Adamantine  
Vitreous, Adamantine  

Pleochroism
Definite dichoric in yellow (yellow to orange-brown)  
Strong: purplish-red  

Dispersion
0.04  
36
0.02  
99+

Transparency
Translucent, Transparent  
Transparent, Translucent, Transparent to opaque  

Refractive Index
1.918-1.936  
1.762-1.778  

Optic Character
-  
-  

Crystal System
tetragonal  
Trigonal  

Birefringence
0.016  
0.008  

Clarity
Translucent  
Transparent  

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Scheelite and Ruby Optic Character

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

Similar to their colors, Scheelite and Ruby 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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