Home
Gemstones


Holmquistite and Fluorite Optical Properties


Fluorite and Holmquistite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
Strong in shades of violet when dark-colored.Anthony et al   
AbsentWalter Schumann   

Dispersion
Not Available   
0.01   
30

Transparency
Transparent   
Transparent, Translucent, Transparent to translucent   

Refractive Index
1.622-1.666   
1.432-1.436   

Optic Character
Not Available   
Not Available   

Crystal System
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma   
cubic   

Birefringence
Not Available   
Not Available   

Clarity
Transparent   
Transparent   

Benefits >>
<< Physical Properties

Holmquistite and Fluorite Optic Character

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

Compare Black Gemstones

Holmquistite and Fluorite Transparency

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

Black Gemstones

Black Gemstones


Compare Black Gemstones