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Bertrandite
Bertrandite

Jacobsite
Jacobsite



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Bertrandite
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Jacobsite

Bertrandite and Jacobsite Optical Properties

Optical Properties

Luster

Vitreous
-

Pleochroism

none.
-

Dispersion

0.010.03
0.005 1
👆🏻

Transparency

TransparentAnthony et al
Translucent

Refractive Index

1.583-1.614-9999
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic Pyramidal H-M Symbol (mm2) Space Group: Ccm21
-

Birefringence

-9999-9999
0 0.296
👆🏻

Clarity

TransparentAnthony et al
Translucent

Bertrandite and Jacobsite Optic Character

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

Bertrandite and Jacobsite Transparency

Similar to their colors, Bertrandite and Jacobsite 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, Bertrandite is TransparentAnthony et al while Bertrandite is TransparentAnthony et al in appearance.