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Amazonite and Malachite Optical Properties


Malachite and Amazonite Optical Properties


Optical Properties

Luster
Vitreous   
Adamantine, Vitreous, Silky, Fibrous   

Pleochroism
WeakMichael O’Donoghue   
Not Available   

Dispersion
Not Available   
None   

Transparency
Translucent, Translucent to opaque   
Opaque   

Refractive Index
1.522-1.530   
1.655-1.909   

Optic Character
Not Available   
Not Available   

Crystal System
Triclinic   
monoclinic   

Birefringence
0.008-0.010   
0.254   

Clarity
Translucent   
Gemmological Tables (2004) More from other references   

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Amazonite and Malachite Optic Character

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

Similar to their colors, Amazonite and Malachite 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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