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Vivianite
Vivianite
☒

Uvarovite Garnet
Uvarovite Garnet
☒



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Vivianite
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Uvarovite Garnet

Vivianite and Uvarovite Garnet Optical Properties

Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous, Pearly
Anomalous plechroism is strong with colours deep blue/pale yellowish green/yellowish green.Michael O’Donoghue
0.03
Transparent
1.560-1.640
-
-
0.054-0.075
Transparent
 
Adamantine
-
0.03
Transparent, Translucent, Transparent to translucent
1.860-1.870
-
Isometric
-9999
Transparent to translucent

Vivianite and Uvarovite Garnet Optic Character

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

Similar to their colors, Vivianite and Uvarovite Garnet 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 while Vivianite is in appearance.