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Rhodochrosite
Rhodochrosite

Marcasite
Marcasite



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Rhodochrosite
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Marcasite

Rhodochrosite and Marcasite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Not Available
1.2 Pleochroism
Weak
NilArthur Thomas
1.3 Dispersion
0.02NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Opaque, Transparent to nearly opaque
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.60Not Available
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Not Available
1.8 Birefringence
0.208-0.220Not Available
Achroite
0 0.296
1.9 Clarity
Transparent to nearly opaque
Gemmological Tables (2004) More from other references

Rhodochrosite and Marcasite Optic Character

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

Rhodochrosite and Marcasite Transparency

Similar to their colors, Rhodochrosite and Marcasite 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, Rhodochrosite is Opaque, Transparent and Transparent to nearly opaque while Rhodochrosite is Opaque, Transparent and Transparent to nearly opaque in appearance.