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Vivianite
Vivianite

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Vivianite and Brucite Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous, Pearly
Vitreous, Pearly
1.2 Pleochroism
Anomalous plechroism is strong with colours deep blue/pale yellowish green/yellowish green.Michael O’Donoghue
Not Available
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Transparent
TransparentMichael O’Donoghue, Gems, Sixth Edition (2006)
1.5 Refractive Index
1.560-1.640
1.56-1.60
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Trigonal
1.8 Birefringence
0.054-0.075
0.010-0.020
1.9 Clarity
Transparent
TransparentMichael O’Donoghue

Vivianite and Brucite Optic Character

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

Similar to their colors, Vivianite and Brucite 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 Transparent while Vivianite is Transparent in appearance.