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Spinel and Peridot Optical Properties


Peridot and Spinel Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous, Greasy   

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

Dispersion
0.02   
18
0.02   
18

Transparency
Transparent, Translucent, Transparent to translucent   
Transparent   

Refractive Index
1.73   
1.64-1.69   

Optic Character
Not Available   
Not Available   

Crystal System
Isometric   
Orthorhombic   

Birefringence
Not Available   
0.036   

Clarity
TransparentUlrich Henn and Claudio C. Milisenda   
Transparent   

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Spinel and Peridot Optic Character

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

Similar to their colors, Spinel 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, Spinel is Translucent, Transparent and Transparent to translucent while Spinel is Translucent, Transparent and Transparent to translucent in appearance.

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