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Amethyst and Willemite Optical Properties


Willemite and Amethyst Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous, Resinous   

Pleochroism
None   
NilArthur Thomas   

Dispersion
0.01   
27
Not Available   

Transparency
Transparent, Transparent to translucent   
Transparent, Translucent   

Refractive Index
1.544-1.553   
1.687-1.723   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
Trigonal   

Birefringence
0.009   
0.028-0.030   

Clarity
Transparent   
Transparent   

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Amethyst and Willemite Optic Character

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

Similar to their colors, Amethyst 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, Amethyst is Transparent and Transparent to translucent while Amethyst is Transparent and Transparent to translucent in appearance.

Semi Precious

Semi Precious


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