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Sapphire and Californite Optical Properties


Californite and Sapphire Optical Properties


Optical Properties

Luster
Vitreous, Adamantine, Vitreous, Adamantine   
Vitreous   

Pleochroism
Strong   
Weak; present colour lighter   

Dispersion
0.02   
21
Not Available   

Transparency
Transparent, Translucent, Transparent to opaque   
TranslucentWalter Schumann, Gemstones of the world (2001)   

Refractive Index
1.762-1.788   
1.700-1.725   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
Not Available   

Birefringence
0.008-0.009   
0.001-0.012   

Clarity
Transparent   
TranslucentWalter Schumann   

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Sapphire and Californite Optic Character

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

Similar to their colors, Sapphire and Californite 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, Sapphire is Translucent, Transparent and Transparent to opaque while Sapphire is Translucent, Transparent and Transparent to opaque in appearance.

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