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Sapphire and Cavansite Optical Properties


Cavansite and Sapphire Optical Properties


Optical Properties

Luster
Vitreous, Adamantine, Vitreous, Adamantine   
Vitreous, Pearly   

Pleochroism
Strong   
Visible: X=Z= colorless Y= blue   

Dispersion
0.02   
21
Not Available   

Transparency
Transparent, Translucent, Transparent to opaque   
Not Available   

Refractive Index
1.762-1.788   
1.542   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
Orthorhombic   

Birefringence
0.008-0.009   
0.009   

Clarity
Transparent   
Not Available   

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Sapphire and Cavansite Optic Character

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

Similar to their colors, Sapphire and Cavansite 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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