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Vesuvianite and Danburite Optical Properties


Danburite and Vesuvianite Optical Properties


Optical Properties

Luster
Vitreous, Resinous   
Vitreous, Greasy   

Pleochroism
slight in colored varieties   
Weak: pale yellow yellow   

Dispersion
Not Available   
0.02   
22

Transparency
Not Available   
Gemmological Tables (2004) More from other references   

Refractive Index
1.703-1.752   
1.627-1.639   

Optic Character
Not Available   
Biaxial/+   

Crystal System
tetragonal   
Orthorhombic   

Birefringence
0.004-0.006   
0.006   

Clarity
Not Available   
TransparentUlrich Henn and Claudio C. Milisenda   

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Vesuvianite and Danburite Optic Character

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

Similar to their colors, Vesuvianite 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, Vesuvianite is Not Available while Vesuvianite is Not Available in appearance.

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