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Scheelite and Amblygonite Optical Properties


Amblygonite and Scheelite Optical Properties


Optical Properties

Luster
Vitreous, Adamantine   
Vitreous, Pearly   

Pleochroism
Definite dichoric in yellow (yellow to orange-brown)   
weak to none   

Dispersion
0.04   
12
0.01   
26

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

Refractive Index
1.918-1.936   
1.578-1.646   

Optic Character
Not Available   
Biaxial/+   

Crystal System
tetragonal   
Triclinic   

Birefringence
0.016   
0.020-0.030   

Clarity
Translucent   
TransparentUlrich Henn and Claudio C. Milisenda   

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Scheelite and Amblygonite Optic Character

Scheelite and Amblygonite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Scheelite and Amblygonite 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 Amblygonite 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. Amblygonite has Biaxial/+ character.

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Scheelite and Amblygonite Transparency

Similar to their colors, Scheelite and Amblygonite 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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