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Verdite
Verdite

Bertrandite
Bertrandite



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Verdite
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Bertrandite

Verdite and Bertrandite Optical Properties

Optical Properties

Luster

Vitreous, Silky
Vitreous

Pleochroism

Extreme
none.

Dispersion

0.030.01
0.005 1
👆🏻

Transparency

Translucent
TransparentAnthony et al

Refractive Index

1.5801.583-1.614
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/c
Orthorhombic Pyramidal H-M Symbol (mm2) Space Group: Ccm21

Birefringence

-9999-9999
0 0.296
👆🏻

Clarity

Translucent
TransparentAnthony et al

Verdite and Bertrandite Optic Character

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

Verdite and Bertrandite Transparency

Similar to their colors, Verdite and Bertrandite 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, Verdite is Translucent while Verdite is Translucent in appearance.