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Garnet
Garnet

Marcasite
Marcasite



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Garnet
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Marcasite

Garnet and Marcasite Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous, Adamantine, Vitreous, Adamantine
Not Available
1.2 Pleochroism
None
NilArthur Thomas
1.3 Dispersion
0.02NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Transparent to translucent
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.730-1.895Not Available
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Not Available
1.8 Birefringence
Not AvailableNot Available
Achroite
0 0.296
1.9 Clarity
Transparent
Gemmological Tables (2004) More from other references

Garnet and Marcasite Optic Character

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

Garnet and Marcasite Transparency

Similar to their colors, Garnet 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, Garnet is Transparent and Transparent to translucent while Garnet is Transparent and Transparent to translucent in appearance.