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Rhodolite
Rhodolite

Vivianite
Vivianite



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Vivianite

Rhodolite and Vivianite Optical Properties

1 Optical Properties
1.1 Luster
Greasy, Vitreous
Vitreous, Pearly
1.2 Pleochroism
None
Anomalous plechroism is strong with colours deep blue/pale yellowish green/yellowish green.Michael O’Donoghue
1.3 Dispersion
Albite Optical ..
None
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Gemmological Tables (2004)
Transparent
1.5 Refractive Index
1.760
1.560-1.640
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
cubic
Not Available
1.8 Birefringence
0.010-0.014
0.054-0.075
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
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 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 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 Gemmological Tables (2004) while Rhodolite is Gemmological Tables (2004) in appearance.