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Scheelite and Almandine Optical Properties


Almandine and Scheelite Optical Properties


Optical Properties

Luster
Vitreous, Adamantine   
Greasy, Vitreous   

Pleochroism
Definite dichoric in yellow (yellow to orange-brown)   
None   

Dispersion
0.04   
12
0.03   
15

Transparency
Translucent, Transparent   
Gemmological Tables (2004) More from other references   

Refractive Index
1.918-1.936   
1.770-1.820   

Optic Character
Not Available   
Not Available   

Crystal System
tetragonal   
cubic   

Birefringence
0.016   
Not Available   

Clarity
Translucent   
TransparentUlrich Henn and Claudio C. Milisenda   

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Scheelite and Almandine Optic Character

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

Similar to their colors, Scheelite and Almandine 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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