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Sapphire and Pectolite Optical Properties


Pectolite and Sapphire Optical Properties


Optical Properties

Luster
Vitreous, Adamantine, Vitreous, Adamantine   
Silky   

Pleochroism
Strong   
NilArthur Thomas   

Dispersion
0.02   
21
Not Available   

Transparency
Transparent, Translucent, Transparent to opaque   
Transparent   

Refractive Index
1.762-1.788   
1.595-1.645   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
Triclinic   

Birefringence
0.008-0.009   
0.028-0.038   

Clarity
Transparent   
Transparent   

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Sapphire and Pectolite Optic Character

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

Similar to their colors, Sapphire and Pectolite 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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