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Prasiolite and Pyrope Optical Properties


Pyrope and Prasiolite Optical Properties


Optical Properties

Luster
Vitreous   
Greasy, Vitreous   

Pleochroism
Very weak: light green pale greenWalter Schumann   
None   

Dispersion
0.01   
27
0.02   
16

Transparency
Transparent, Translucent   
Gemmological Tables (2004) More from other references   

Refractive Index
1.544-1.553   
1.720-1.756   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
cubic   

Birefringence
0.009   
Not Available   

Clarity
Transparent   
TransparentUlrich Henn and Claudio C. Milisenda   

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Prasiolite and Pyrope Optic Character

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

Similar to their colors, Prasiolite and Pyrope 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, Prasiolite is Translucent and Transparent while Prasiolite is Translucent and Transparent in appearance.

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