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Fluorite and Howlite Optical Properties


Howlite and Fluorite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
AbsentWalter Schumann   
NilArthur Thomas   

Dispersion
0.01   
30
Not Available   

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

Refractive Index
1.432-1.436   
1.583-1.608   

Optic Character
Not Available   
Not Available   

Crystal System
cubic   
monoclinic   

Birefringence
Not Available   
0.019   

Clarity
Transparent   
Gemmological Tables (2004) More from other references   

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Fluorite and Howlite Optic Character

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

Similar to their colors, Fluorite and Howlite 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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