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Rhodolite
Rhodolite

Vivianite
Vivianite



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Rhodolite
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Vivianite

Rhodolite and Vivianite Optical Properties

Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Greasy, Vitreous
None
0.03
-
1.760
-
cubic
0.010-0.014
TransparentUlrich Henn and Claudio C. Milisenda
 
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

Rhodolite and Vivianite Optic Character

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

Rhodolite and Vivianite Transparency

Similar to their colors, Rhodolite 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, Rhodolite is while Rhodolite is in appearance.