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Marcasite
Marcasite

Hibonite
Hibonite



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Marcasite
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Hibonite

Marcasite and Hibonite Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Vitreous
1.2 Pleochroism
NilArthur Thomas
O = brownish gray; E = gray
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004) More from other references
Handbook of mineralogy (2001)
1.5 Refractive Index
Not Available1.79-1.807
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Hexagonal
1.8 Birefringence
Not AvailableNot Available
Achroite
0 0.296
1.9 Clarity
Gemmological Tables (2004) More from other references
Handbook of mineralogy (2001)

Marcasite and Hibonite Optic Character

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

Marcasite and Hibonite Transparency

Similar to their colors, Marcasite and Hibonite 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, Marcasite is Gemmological Tables (2004) More from other references while Marcasite is Gemmological Tables (2004) More from other references in appearance.