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Beudantite
Beudantite

Vivianite
Vivianite



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Beudantite
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Vivianite

Beudantite and Vivianite Optical Properties

Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous, Resinous
visible
0.03
-
1.957
-
Trigonal
0.014
-
 
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

Beudantite and Vivianite Optic Character

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

Beudantite and Vivianite Transparency

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