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Sulphur and Danburite Optical Properties


Danburite and Sulphur Optical Properties


Optical Properties

Luster
Not Available   
Vitreous, Greasy   

Pleochroism
Not Available   
Weak: pale yellow yellow   

Dispersion
Not Available   
0.02   
22

Transparency
TranslucentWalter Schumann, Gemstones of the world (2001)   
Gemmological Tables (2004) More from other references   

Refractive Index
1.958-2.245   
1.627-1.639   

Optic Character
Not Available   
Biaxial/+   

Crystal System
Not Available   
Orthorhombic   

Birefringence
0.291   
0.006   

Clarity
TranslucentWalter Schumann   
TransparentUlrich Henn and Claudio C. Milisenda   

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Sulphur and Danburite Optic Character

Sulphur and Danburite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Sulphur and Danburite 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 Danburite 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. Danburite has Biaxial/+ character.

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Sulphur and Danburite Transparency

Similar to their colors, Sulphur and Danburite 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.

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