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Chrysoprase and Willemite Optical Properties


Willemite and Chrysoprase Optical Properties


Optical Properties

Luster
Vitreous, Vitreous, Waxy   
Vitreous, Resinous   

Pleochroism
AbsentWalter Schumann   
NilArthur Thomas   

Dispersion
None   
Not Available   

Transparency
Translucent, Translucent, Opaque, Translucent to nearly opaque   
Transparent, Translucent   

Refractive Index
1.530-1.543   
1.687-1.723   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
Trigonal   

Birefringence
0.004   
0.028-0.030   

Clarity
Translucent   
Transparent   

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Chrysoprase and Willemite Optic Character

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

Similar to their colors, Chrysoprase and Willemite 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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