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Linarite and Augelite Optical Properties


Augelite and Linarite Optical Properties


Optical Properties

Luster
Sub-Adamantine, Vitreous   
Pearly   

Pleochroism
X = pale blue; Y = blue; Z = Prussian blue   
NilArthur Thomas   

Dispersion
Not Available   
Not Available   

Transparency
Transparent   
Gemmological Tables (2004) More from other references   

Refractive Index
1.809-1.859   
1.570-1.591   

Optic Character
Not Available   
Not Available   

Crystal System
monoclinic   
  

Birefringence
0.050   
0.020-0.021   

Clarity
Transparent   
TransparentUlrich Henn and Claudio C. Milisenda   

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Linarite and Augelite Optic Character

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

Similar to their colors, Linarite and Augelite 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 Transparent while Linarite is Transparent in appearance.

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