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Fluorite and Umbalite Optical Properties


Umbalite and Fluorite Optical Properties


Optical Properties

Luster
Vitreous   
Not Available   

Pleochroism
AbsentWalter Schumann   
Not Available   

Dispersion
0.01   
30
0.02   
16

Transparency
Transparent, Translucent, Transparent to translucent   
TransparentGemdat.org, Management Team (2012)   

Refractive Index
1.432-1.436   
1.730-1.820   

Optic Character
Not Available   
Not Available   

Crystal System
cubic   
Not Available   

Birefringence
Not Available   
Not Available   

Clarity
Transparent   
TransparentGemdat.org   

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Fluorite and Umbalite Optic Character

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

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Fluorite and Umbalite Transparency

Similar to their colors, Fluorite and Umbalite 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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