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Arfvedsonite
Arfvedsonite

Zoisite
Zoisite



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X
Arfvedsonite
X
Zoisite

Arfvedsonite and Zoisite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

Strong: Blue-greens
X = pale pink to red-violet; Y = nearly colorless to bright pink or deep blue; Z = pale yellow to yellow-green

Dispersion

0.020.02
0.005 1
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Transparency

-
Transparent, Translucent, Opaque . May be translucent in thin backlit sections.

Refractive Index

1.652-1.6991.685-1.707
1 3.25
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Optic Character

-
-

Crystal System

monoclinic
Orthorhombic

Birefringence

-99990.006-0.018
0 0.296
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Clarity

-
Transparent

Arfvedsonite and Zoisite Optic Character

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

Arfvedsonite and Zoisite Transparency

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