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Marialite and Herderite Optical Properties


Herderite and Marialite Optical Properties


Optical Properties

Luster
Vitreous, Pearly, Resinous   
Vitreous   

Pleochroism
Not Available   
Not Available   

Dispersion
Not Available   
Not Available   

Transparency
Transparent, Translucent   
Transparent   

Refractive Index
1.540-1.550   
1.587-1.642   

Optic Character
Not Available   
Biaxial/+   

Crystal System
tetragonal   
monoclinic   

Birefringence
0.004-0.008   
0.028-0.032   

Clarity
Transparent   
Transparent   

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Marialite and Herderite Optic Character

Marialite and Herderite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Marialite and Herderite 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 Marialite and Herderite 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. Herderite has Biaxial/+ character.

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Marialite and Herderite Transparency

Similar to their colors, Marialite and Herderite 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, Marialite is Translucent and Transparent while Marialite is Translucent and Transparent in appearance.

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