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Andesine
Andesine

Zoisite
Zoisite



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Andesine
X
Zoisite

Andesine and Zoisite Optical Properties

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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous
colorless.
0.70
Transparent, Translucent, Transparent to translucent
1.543-1.564
Biaxial/+
Triclinic
0.007-0.011
Transparent
 
Vitreous
X = pale pink to red-violet; Y = nearly colorless to bright pink or deep blue; Z = pale yellow to yellow-green
0.02
Transparent, Translucent, Opaque . May be translucent in thin backlit sections.
1.685-1.707
-
Orthorhombic
0.006-0.018
Transparent

Andesine and Zoisite Optic Character

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

Andesine and Zoisite Transparency

Similar to their colors, Andesine 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, Andesine is while Andesine is in appearance.