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Lazurite and Sapphire Optical Properties


Sapphire and Lazurite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous, Adamantine, Vitreous, Adamantine   

Pleochroism
Not Available   
Strong   

Dispersion
Not Available   
0.02   
21

Transparency
Gemmological Tables (2004) More from other references   
Transparent, Translucent, Transparent to opaque   

Refractive Index
1.500   
1.762-1.788   

Optic Character
Not Available   
Not Available   

Crystal System
Isometric   
Trigonal   

Birefringence
Not Available   
0.008-0.009   

Clarity
Gemmological Tables (2004) More from other references   
Transparent   

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Lazurite and Sapphire Optic Character

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

Similar to their colors, Lazurite and Sapphire 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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