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Chrysoprase and Gahnospinel Optical Properties


Gahnospinel and Chrysoprase Optical Properties


Optical Properties

Luster
Vitreous, Vitreous, Waxy   
Vitreous   

Pleochroism
AbsentWalter Schumann   
AbsentWalter Schumann   

Dispersion
None   
Not Available   

Transparency
Translucent, Translucent, Opaque, Translucent to nearly opaque   
Gemmological Tables (2004)   

Refractive Index
1.530-1.543   
1.735-1.790   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
Isometric   

Birefringence
0.004   
Not Available   

Clarity
Translucent   
TransparentUlrich Henn and Claudio C. Milisenda   

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Chrysoprase and Gahnospinel Optic Character

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

Similar to their colors, Chrysoprase and Gahnospinel 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, Chrysoprase is Opaque, Translucent, Translucent and Translucent to nearly opaque while Chrysoprase is Opaque, Translucent, Translucent and Translucent to nearly opaque in appearance.

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