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Chlorite group
Chlorite group

Zoisite
Zoisite



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X
Chlorite group
X
Zoisite

Chlorite group and Zoisite Optical Properties

Optical Properties

Luster

Vitreous, Pearly
Vitreous

Pleochroism

-
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

1.57-1.671.685-1.707
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

Chlorite group and Zoisite Optic Character

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

Chlorite group and Zoisite Transparency

Similar to their colors, Chlorite group 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, Chlorite group is while Chlorite group is in appearance.