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Amazonite and Emerald Optical Properties


Emerald and Amazonite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
WeakMichael O’Donoghue   
Strong dichroism: yellow green Lazzarelli   

Dispersion
Not Available   
0.01   
26

Transparency
Translucent, Translucent to opaque   
Transparent, Translucent, Transparent to translucent   

Refractive Index
1.522-1.530   
1.565-1.602   

Optic Character
Not Available   
Not Available   

Crystal System
Triclinic   
Hexagonal   

Birefringence
0.008-0.010   
0.0040-0.0070   

Clarity
Translucent   
Color grading system   

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Amazonite and Emerald Optic Character

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

Similar to their colors, Amazonite and Emerald 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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