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Emerald
Emerald

Zoisite
Zoisite



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Emerald
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Zoisite

Emerald and Zoisite Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
Strong dichroism: yellow green Lazzarelli
X = pale pink to red-violet; Y = nearly colorless to bright pink or deep blue; Z = pale yellow to yellow-green
1.3 Dispersion
Albite Optical ..
0.01
Rank: 26 (Overall)
0.02
Rank: 19 (Overall)
Fluorite Optical Properties
1.4 Transparency
Transparent, Translucent, Transparent to translucent
Transparent, Translucent, Opaque . May be translucent in thin backlit sections.
1.5 Refractive Index
1.565-1.602
1.685-1.707
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Hexagonal
Orthorhombic
1.8 Birefringence
0.0040-0.0070
0.006-0.018
1.9 Clarity
Color grading system
Transparent

Emerald and Zoisite Optic Character

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

Emerald and Zoisite Transparency

Similar to their colors, Emerald 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, Emerald is Translucent, Transparent and Transparent to translucent while Emerald is Translucent, Transparent and Transparent to translucent in appearance.