Clinohedrite and Vivianite Optical Properties

Clinohedrite

Vivianite

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1 Optical Properties

1.1 Luster

Pearly

Vitreous, Pearly

1.2 Pleochroism

Not Available

Anomalous plechroism is strong with colours deep blue/pale yellowish green/yellowish green.Michael OâDonoghue

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Transparent

1.5 Refractive Index

11.560-1.640

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Monoclinic Domatic H-M Symbol (m) Space Group: Aa

Not Available

1.8 Birefringence

Not Available0.054-0.075

0 0.296

1.9 Clarity

Transparent

Clinohedrite and Vivianite Optic Character

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

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Clinohedrite and Vivianite Transparency

Similar to their colors, Clinohedrite 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, Clinohedrite is Transparent while Clinohedrite is Transparent in appearance.