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Sulphur
Sulphur

Siderite
Siderite



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Sulphur
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Siderite

Sulphur and Siderite Optical Properties

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1 Optical Properties
1.1 Luster
Not Available
Pearly
1.2 Pleochroism
Not Available
Not Available
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
TranslucentWalter Schumann, Gemstones of the world (2001)
Transparent, Translucent
1.5 Refractive Index
1.958-2.2451.633-1.875
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Trigonal
1.8 Birefringence
0.2910.242
Achroite
0 0.296
1.9 Clarity
TranslucentWalter Schumann
Transparent

Sulphur and Siderite Optic Character

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

Sulphur and Siderite Transparency

Similar to their colors, Sulphur and Siderite 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, Sulphur is Gemstones of the world (2001) and TranslucentWalter Schumann while Sulphur is Gemstones of the world (2001) and TranslucentWalter Schumann in appearance.