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Linarite
Linarite

Bertrandite
Bertrandite



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Linarite
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Bertrandite

Linarite and Bertrandite Optical Properties

Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Sub-Adamantine, Vitreous
X = pale blue; Y = blue; Z = Prussian blue
0.05
Transparent
1.809-1.859
-
monoclinic
0.050
Transparent
 
Vitreous
none.
0.01
TransparentAnthony et al
1.583-1.614
-
Orthorhombic Pyramidal H-M Symbol (mm2) Space Group: Ccm21
-9999
TransparentAnthony et al

Linarite and Bertrandite Optic Character

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

Linarite and Bertrandite Transparency

Similar to their colors, Linarite 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, Linarite is while Linarite is in appearance.