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Sunstone and Lazulite Optical Properties


Lazulite and Sunstone Optical Properties


Optical Properties

Luster
Vitreous   
Not Available   

Pleochroism
Weak or absentWalter Schumann   
Transparent crystals show a strong pleochroism: colorless light blue dark (violet) blueHerve Nicolas Lazzarelli   

Dispersion
None   
0.01   
26

Transparency
Transparent, Translucent, Transparent to translucent   
Transparent, Translucent   

Refractive Index
1.53-1.55   
1.604-1.646   

Optic Character
Not Available   
Not Available   

Crystal System
Triclinic   
monoclinic   

Birefringence
0.007-0.010   
0.031-0.036   

Clarity
Transparent to translucent   
Transparent   

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Sunstone and Lazulite Optic Character

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

Similar to their colors, Sunstone and Lazulite 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, Sunstone is Translucent, Transparent and Transparent to translucent while Sunstone is Translucent, Transparent and Transparent to translucent in appearance.

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