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Variscite
Variscite

Vivianite
Vivianite



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Variscite
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Vivianite

Variscite and Vivianite Optical Properties

Optical Properties

Luster

Vitreous, Waxy
Vitreous, Pearly

Pleochroism

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

Dispersion

0.010.03
0.005 1
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Transparency

Translucent, Opaque . May be translucent when backlit on the edges.
Transparent

Refractive Index

1.560-1.5941.560-1.640
1 3.25
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Optic Character

-
-

Crystal System

Orthorhombic
-

Birefringence

0.0310.054-0.075
0 0.296
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Clarity

Translucent
Transparent

Variscite and Vivianite Optic Character

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

Variscite and Vivianite Transparency

Similar to their colors, Variscite and Vivianite 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, Variscite is Translucent and Opaque . May be translucent when backlit on the edges. while Variscite is Translucent and Opaque . May be translucent when backlit on the edges. in appearance.