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Fluorite and Danburite Optical Properties


Danburite and Fluorite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous, Greasy   

Pleochroism
AbsentWalter Schumann   
Weak: pale yellow yellow   

Dispersion
0.01   
30
0.02   
22

Transparency
Transparent, Translucent, Transparent to translucent   
Gemmological Tables (2004) More from other references   

Refractive Index
1.432-1.436   
1.627-1.639   

Optic Character
Not Available   
Biaxial/+   

Crystal System
cubic   
Orthorhombic   

Birefringence
Not Available   
0.006   

Clarity
Transparent   
TransparentUlrich Henn and Claudio C. Milisenda   

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Fluorite and Danburite Optic Character

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

Similar to their colors, Fluorite 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, Fluorite is Translucent, Transparent and Transparent to translucent while Fluorite is Translucent, Transparent and Transparent to translucent in appearance.

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