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Pearl and Peridot Optical Properties


Peridot and Pearl Optical Properties


Optical Properties

Luster
Pearly   
Vitreous, Greasy   

Pleochroism
AbsentWalter Schumann   
Weak: yellow-green green (colorless)Herve Nicolas Lazzarelli   

Dispersion
None   
0.02   
18

Transparency
Translucent, Opaque   
Transparent   

Refractive Index
1.52-1.66   
1.64-1.69   

Optic Character
Not Available   
Not Available   

Crystal System
Orthorhombic   
Orthorhombic   

Birefringence
0.156   
0.036   

Clarity
Translucent   
Transparent   

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Pearl and Peridot Optic Character

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

Similar to their colors, Pearl and Peridot 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, Pearl is Opaque and Translucent while Pearl is Opaque and Translucent in appearance.

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