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Linarite and Almandine Optical Properties


Almandine and Linarite Optical Properties


Optical Properties

Luster
Sub-Adamantine, Vitreous  
Greasy, Vitreous  

Pleochroism
X = pale blue; Y = blue; Z = Prussian blue  
None  

Dispersion
0.05  
30
0.03  
99+

Transparency
Transparent  
-  

Refractive Index
1.809-1.859  
1.770-1.820  

Optic Character
-  
-  

Crystal System
monoclinic  
cubic  

Birefringence
0.050  
-9999  

Clarity
Transparent  
TransparentUlrich Henn and Claudio C. Milisenda  

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Linarite and Almandine Optic Character

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

Similar to their colors, Linarite and Almandine 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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