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Lazurite and Herderite Optical Properties


Herderite and Lazurite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
Not Available   
Not Available   

Dispersion
Not Available   
Not Available   

Transparency
Gemmological Tables (2004) More from other references   
Transparent   

Refractive Index
1.500   
1.587-1.642   

Optic Character
Not Available   
Biaxial/+   

Crystal System
Isometric   
monoclinic   

Birefringence
Not Available   
0.028-0.032   

Clarity
Gemmological Tables (2004) More from other references   
Transparent   

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Lazurite and Herderite Optic Character

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

Similar to their colors, Lazurite 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, Lazurite is Gemmological Tables (2004) More from other references while Lazurite is Gemmological Tables (2004) More from other references in appearance.

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