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Holmquistite and Kornerupine Optical Properties


Kornerupine and Holmquistite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
Strong in shades of violet when dark-colored.Anthony et al   
X = colorless to green; Y = colorless   

Dispersion
Not Available   
0.02   
21

Transparency
Transparent   
Gemmological Tables (2004) More from other references   

Refractive Index
1.622-1.666   
1.660-1.685   

Optic Character
Not Available   
Not Available   

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

Birefringence
Not Available   
0.012-0.017   

Clarity
Transparent   
TransparentUlrich Henn and Claudio C. Milisenda   

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Holmquistite and Kornerupine Optic Character

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

Similar to their colors, Holmquistite and Kornerupine 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.

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