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Emerald and Gedrite Optical Properties


Gedrite and Emerald Optical Properties


Optical Properties

Luster
Vitreous   
Fibrous, Vitreous   

Pleochroism
Strong dichroism: yellow green Lazzarelli   
Weak to moderate   

Dispersion
0.01   
26
Not Available   

Transparency
Transparent, Translucent, Transparent to translucent   
Transparent   

Refractive Index
1.565-1.602   
1.625-1.718   

Optic Character
Not Available   
Not Available   

Crystal System
Hexagonal   
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma   

Birefringence
0.0040-0.0070   
Not Available   

Clarity
Color grading system   
Transparent   

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Emerald and Gedrite Optic Character

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

Similar to their colors, Emerald and Gedrite 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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