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Almandine
Almandine

Anthophyllite
Anthophyllite



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Almandine
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Anthophyllite

Almandine and Anthophyllite Optical Properties

Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Greasy, Vitreous
None
0.03
-
1.770-1.820
-
cubic
-9999
TransparentUlrich Henn and Claudio C. Milisenda
 
Vitreous, Pearly
-
0.01
Transparent
1.603-1.690
Biaxial/+
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
-9999
Transparent

Almandine and Anthophyllite Optic Character

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

Almandine and Anthophyllite Transparency

Similar to their colors, Almandine and Anthophyllite 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, Almandine is while Almandine is in appearance.