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Ammolite and Beryllonite Optical Properties


Beryllonite and Ammolite Optical Properties


Optical Properties

Luster
Silky, Vitreous  
Vitreous, Adamantine, Pearly  

Pleochroism
None  
-  

Dispersion
0.01  
99+
0.01  
99+

Transparency
-  
-  

Refractive Index
1.520-1.670  
1.552-1.562  

Optic Character
-  
-  

Crystal System
Trigonal  
monoclinic  

Birefringence
0.135-0.145  
0.009  

Clarity
-  
TransparentUlrich Henn and Claudio C. Milisenda  

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Ammolite and Beryllonite Optic Character

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

Similar to their colors, Ammolite and Beryllonite 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, Ammolite is while Ammolite is in appearance.

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