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Almandine
Almandine

Hematite
Hematite



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Almandine
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Hematite

Almandine and Hematite 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
 
-
O = brownish red; E = yellowish red
0.05
OpaqueHerve Nicolas Lazzarelli
2.690-3.220
-
Trigonal
0.280
OpaqueHerve Nicolas Lazzarelli

Almandine and Hematite Optic Character

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

Similar to their colors, Almandine and Hematite 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.