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Lazurite and Grandidierite Optical Properties


Grandidierite and Lazurite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous, Pearly   

Pleochroism
Not Available   
visible   

Dispersion
Not Available   
Not Available   

Transparency
Gemmological Tables (2004) More from other references   
Gemmological Tables (2004) More from other references   

Refractive Index
1.500   
1.578-1.639   

Optic Character
Not Available   
Not Available   

Crystal System
Isometric   
Orthorhombic   

Birefringence
Not Available   
0.037-0.039   

Clarity
Gemmological Tables (2004) More from other references   
Gemmological Tables (2004) More from other references   

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Lazurite and Grandidierite Optic Character

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

Similar to their colors, Lazurite and Grandidierite 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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