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Zinnwaldite and Rosasite Optical Properties


Rosasite and Zinnwaldite Optical Properties


Optical Properties

Luster
Pearly, Vitreous   
Silky, Vitreous   

Pleochroism
Distinct   
Strong: X = pale emerald green or colourless; Y = dark emerald green or pale blue; Z = dark emerald green or pale blue   

Dispersion
Not Available   
Not Available   

Transparency
Not Available   
Not Available   

Refractive Index
1.565-1.625   
1.672-1.688   

Optic Character
Not Available   
Not Available   

Crystal System
monoclinic   
monoclinic   

Birefringence
0.040-0.050   
0.139-0.143   

Clarity
Not Available   
Not Available   

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Zinnwaldite and Rosasite Optic Character

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

Similar to their colors, Zinnwaldite and Rosasite 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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