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Sphene and Zoisite Optical Properties


Zoisite and Sphene Optical Properties


Optical Properties

Luster
Not Available   
Vitreous   

Pleochroism
Not Available   
X = pale pink to red-violet; Y = nearly colorless to bright pink or deep blue; Z = pale yellow to yellow-green   

Dispersion
Not Available   
0.02   
19

Transparency
Not Available   
Transparent, Translucent, Opaque . May be translucent in thin backlit sections.   

Refractive Index
1.84-2.11   
1.685-1.707   

Optic Character
Not Available   
Not Available   

Crystal System
monoclinic   
Orthorhombic   

Birefringence
Not Available   
0.006-0.018   

Clarity
Color grading system   
Transparent   

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Sphene and Zoisite Optic Character

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

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Sphene and Zoisite Transparency

Similar to their colors, Sphene 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, Sphene is Not Available while Sphene is Not Available in appearance.

Yellow Gemstones

Yellow Gemstones


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