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Vivianite and Tigers Eye Optical Properties


Tigers Eye and Vivianite Optical Properties


Optical Properties

Luster
Vitreous, Pearly   
Silky   

Pleochroism
Anomalous plechroism is strong with colours deep blue/pale yellowish green/yellowish green.Michael O’Donoghue   
Not Available   

Dispersion
Not Available   
None   

Transparency
Transparent   
Opaque   

Refractive Index
1.560-1.640   
1.534-1.540   

Optic Character
Not Available   
Not Available   

Crystal System
Not Available   
Trigonal   

Birefringence
0.054-0.075   
Not Available   

Clarity
Transparent   
Gemstones of the world (2001) More from other references   

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Vivianite and Tigers Eye Optic Character

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

Similar to their colors, Vivianite and Tigers Eye 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, Vivianite is Transparent while Vivianite is Transparent in appearance.

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