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Pyrrhotite
Pyrrhotite

Almandine
Almandine



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Pyrrhotite
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Almandine

Pyrrhotite and Almandine Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Greasy, Vitreous
1.2 Pleochroism
Not Available
None
1.3 Dispersion
NA0.03
Fluorite Optical Properties
0.007 1
1.4 Transparency
Not Available
Gemmological Tables (2004) More from other references
1.5 Refractive Index
31.770-1.820
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
cubic
1.8 Birefringence
Not AvailableNot Available
Achroite
0 0.296
1.9 Clarity
Not Available
TransparentUlrich Henn and Claudio C. Milisenda

Pyrrhotite and Almandine Optic Character

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

Pyrrhotite and Almandine Transparency

Similar to their colors, Pyrrhotite 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, Pyrrhotite is Not Available while Pyrrhotite is Not Available in appearance.