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Shigaite and Uvite Optical Properties


Uvite and Shigaite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
Distinct   
Pale yellow colorlessAnthony et al   

Dispersion
Not Available   
0.02   
22

Transparency
Not Available   
Transparent   

Refractive Index
1.546   
1.614-1.666   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
Not Available   

Birefringence
Not Available   
0.014-0.032   

Clarity
Not Available   
Transparent   

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Shigaite and Uvite Optic Character

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

Similar to their colors, Shigaite and Uvite 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, Shigaite is Not Available while Shigaite is Not Available in appearance.

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