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Vivianite
Vivianite

Catapleiite
Catapleiite



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Vivianite
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Catapleiite

Vivianite and Catapleiite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Pearly
Vitreous
1.2 Pleochroism
Anomalous plechroism is strong with colours deep blue/pale yellowish green/yellowish green.Michael O’Donoghue
Not Available
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
TransparentUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
1.5 Refractive Index
1.560-1.6401.590-1.629
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Monoclinic Prismatic H-M Symbol (2/m) Space Group: B2/b (pseudo-HEX)
1.8 Birefringence
0.054-0.0750.039
Achroite
0 0.296
1.9 Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Vivianite and Catapleiite Optic Character

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

Similar to their colors, Vivianite and Catapleiite 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.