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Vivianite
Vivianite

Tsavorite
Tsavorite



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Vivianite
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Tsavorite

Vivianite and Tsavorite Optical Properties

Optical Properties

Luster

Vitreous, Pearly
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Pleochroism

Anomalous plechroism is strong with colours deep blue/pale yellowish green/yellowish green.Michael O’Donoghue
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Dispersion

0.030.02
0.005 1
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Transparency

Transparent
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Refractive Index

1.560-1.6401.735-1.744
1 3.25
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Optic Character

-
-

Crystal System

-
cubic

Birefringence

0.054-0.075-9999
0 0.296
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Clarity

Transparent
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Vivianite and Tsavorite Optic Character

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

Vivianite and Tsavorite Transparency

Similar to their colors, Vivianite and Tsavorite 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.