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Sulphur
Sulphur

Grandidierite
Grandidierite



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Sulphur
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Grandidierite

Sulphur and Grandidierite Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Vitreous, Pearly
1.2 Pleochroism
Not Available
visible
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
TranslucentWalter Schumann, Gemstones of the world (2001)
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.958-2.2451.578-1.639
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Orthorhombic
1.8 Birefringence
0.2910.037-0.039
Achroite
0 0.296
1.9 Clarity
TranslucentWalter Schumann
Gemmological Tables (2004) More from other references

Sulphur and Grandidierite Optic Character

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

Similar to their colors, Sulphur and Grandidierite 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.