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Scheelite and Hematite Optical Properties


Hematite and Scheelite Optical Properties


Optical Properties

Luster
Vitreous, Adamantine  
-  

Pleochroism
Definite dichoric in yellow (yellow to orange-brown)  
O = brownish red; E = yellowish red  

Dispersion
0.04  
36
0.05  
25

Transparency
Translucent, Transparent  
OpaqueHerve Nicolas Lazzarelli  

Refractive Index
1.918-1.936  
2.690-3.220  

Optic Character
-  
-  

Crystal System
tetragonal  
Trigonal  

Birefringence
0.016  
0.280  

Clarity
Translucent  
OpaqueHerve Nicolas Lazzarelli  

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Scheelite and Hematite Optic Character

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

Similar to their colors, Scheelite and Hematite 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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