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Siderite
Siderite

Pyrite
Pyrite



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Siderite
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Pyrite

Siderite and Pyrite Optical Properties

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1 Optical Properties
1.1 Luster
Pearly
Not Available
1.2 Pleochroism
Not Available
Not Available
1.3 Dispersion
NANone
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
OpaqueHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references
1.5 Refractive Index
1.633-1.875Not Available
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Isometric
1.8 Birefringence
0.242Not Available
Achroite
0 0.296
1.9 Clarity
Transparent
OpaqueHerve Nicolas Lazzarelli

Siderite and Pyrite Optic Character

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

Siderite and Pyrite Transparency

Similar to their colors, Siderite and Pyrite 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, Siderite is Translucent and Transparent while Siderite is Translucent and Transparent in appearance.