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Ammolite and Zoisite Optical Properties


Zoisite and Ammolite Optical Properties


Optical Properties

Luster
Silky, Vitreous   
Vitreous   

Pleochroism
None   
X = pale pink to red-violet; Y = nearly colorless to bright pink or deep blue; Z = pale yellow to yellow-green   

Dispersion
Not Available   
0.02   
19

Transparency
Not Available   
Transparent, Translucent, Opaque . May be translucent in thin backlit sections.   

Refractive Index
1.520-1.670   
1.685-1.707   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
Orthorhombic   

Birefringence
0.135-0.145   
0.006-0.018   

Clarity
Not Available   
Transparent   

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Ammolite and Zoisite Optic Character

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

Similar to their colors, Ammolite and Zoisite 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, Ammolite is Not Available while Ammolite is Not Available in appearance.

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