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Pyrargyrite and Amblygonite Optical Properties


Amblygonite and Pyrargyrite Optical Properties


Optical Properties

Luster
Adamantine   
Vitreous, Pearly   

Pleochroism
Distinct   
weak to none   

Dispersion
Not Available   
0.01   
26

Transparency
Translucent   
Gemmological Tables (2004) More from other references   

Refractive Index
2.881-3.084   
1.578-1.646   

Optic Character
Not Available   
Biaxial/+   

Crystal System
Trigonal   
Triclinic   

Birefringence
0.203   
0.020-0.030   

Clarity
Translucent   
TransparentUlrich Henn and Claudio C. Milisenda   

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Pyrargyrite and Amblygonite Optic Character

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

Similar to their colors, Pyrargyrite 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, Pyrargyrite is Translucent while Pyrargyrite is Translucent in appearance.

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