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Zoisite
Zoisite

Crocoite
Crocoite



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Zoisite
X
Crocoite

Zoisite and Crocoite Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous
Adamantine
1.2 Pleochroism
X = pale pink to red-violet; Y = nearly colorless to bright pink or deep blue; Z = pale yellow to yellow-green
Distinctly trichroic
1.3 Dispersion
0.02NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent, Opaque . May be translucent in thin backlit sections.
Transparent
1.5 Refractive Index
1.685-1.7072.31-2.66
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/n
1.8 Birefringence
0.006-0.018Not Available
Achroite
0 0.296
1.9 Clarity
Transparent
Transparent

Zoisite and Crocoite Optic Character

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

Zoisite and Crocoite Transparency

Similar to their colors, Zoisite and Crocoite 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, Zoisite is Opaque . May be translucent in thin backlit sections., Translucent and Transparent while Zoisite is Opaque . May be translucent in thin backlit sections., Translucent and Transparent in appearance.