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Peridot and Thomsonite Optical Properties


Thomsonite and Peridot Optical Properties


Optical Properties

Luster
Vitreous, Greasy   
Vitreous, Pearly   

Pleochroism
Weak: yellow-green green (colorless)Herve Nicolas Lazzarelli   
NilArthur Thomas   

Dispersion
0.02   
18
Not Available   

Transparency
Transparent   
Translucent   

Refractive Index
1.64-1.69   
1.510-1.550   

Optic Character
Not Available   
Not Available   

Crystal System
Orthorhombic   
Orthorhombic   

Birefringence
0.036   
0.015-0.020   

Clarity
Transparent   
Translucent   

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Peridot and Thomsonite Optic Character

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

Similar to their colors, Peridot and Thomsonite 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, Peridot is Transparent while Peridot is Transparent in appearance.

Semi Precious

Semi Precious


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