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Zinnwaldite and Anorthite Optical Properties


Anorthite and Zinnwaldite Optical Properties


Optical Properties

Luster
Pearly, Vitreous   
Vitreous   

Pleochroism
Distinct   
colorless.   

Dispersion
Not Available   
Not Available   

Transparency
Not Available   
Transparent   

Refractive Index
1.565-1.625   
1.575-1.588   

Optic Character
Not Available   
Not Available   

Crystal System
monoclinic   
Triclinic   

Birefringence
0.040-0.050   
0.012-0.013   

Clarity
Not Available   
Transparent   

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<< Physical Properties

Zinnwaldite and Anorthite Optic Character

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

Similar to their colors, Zinnwaldite and Anorthite 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, Zinnwaldite is Not Available while Zinnwaldite is Not Available in appearance.

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