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Amazonite and Prasiolite Optical Properties


Prasiolite and Amazonite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
WeakMichael O’Donoghue   
Very weak: light green pale greenWalter Schumann   

Dispersion
Not Available   
0.01   
27

Transparency
Translucent, Translucent to opaque   
Transparent, Translucent   

Refractive Index
1.522-1.530   
1.544-1.553   

Optic Character
Not Available   
Not Available   

Crystal System
Triclinic   
Trigonal   

Birefringence
0.008-0.010   
0.009   

Clarity
Translucent   
Transparent   

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Amazonite and Prasiolite Optic Character

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

Similar to their colors, Amazonite and Prasiolite 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, Amazonite is Translucent and Translucent to opaque while Amazonite is Translucent and Translucent to opaque in appearance.

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