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Jacobsite
Jacobsite

Bertrandite
Bertrandite



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Jacobsite
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Bertrandite

Jacobsite and Bertrandite Optical Properties

Optical Properties

Luster

-
Vitreous

Pleochroism

-
none.

Dispersion

0.030.01
0.005 1
👆🏻

Transparency

Translucent
TransparentAnthony et al

Refractive Index

-99991.583-1.614
1 3.25
👆🏻

Optic Character

-
-

Crystal System

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

Birefringence

-9999-9999
0 0.296
👆🏻

Clarity

Translucent
TransparentAnthony et al

Jacobsite and Bertrandite Optic Character

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

Jacobsite and Bertrandite Transparency

Similar to their colors, Jacobsite 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, Jacobsite is Translucent while Jacobsite is Translucent in appearance.