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Emerald and Rhodolite Optical Properties


Rhodolite and Emerald Optical Properties


Optical Properties

Luster
Vitreous   
Greasy, Vitreous   

Pleochroism
Strong dichroism: yellow green Lazzarelli   
None   

Dispersion
0.01   
26
None   

Transparency
Transparent, Translucent, Transparent to translucent   
Gemmological Tables (2004)   

Refractive Index
1.565-1.602   
1.760   

Optic Character
Not Available   
Not Available   

Crystal System
Hexagonal   
cubic   

Birefringence
0.0040-0.0070   
0.010-0.014   

Clarity
Color grading system   
TransparentUlrich Henn and Claudio C. Milisenda   

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Emerald and Rhodolite Optic Character

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

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

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