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Emerald and Aquamarine Optical Properties


Aquamarine and Emerald Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
Strong dichroism: yellow green Lazzarelli   
Not Available   

Dispersion
0.01   
26
0.01   
26

Transparency
Transparent, Translucent, Transparent to translucent   
Transparent, Translucent, Transparent to translucent   

Refractive Index
1.565-1.602   
1.570-1.592   

Optic Character
Not Available   
Not Available   

Crystal System
Hexagonal   
Hexagonal   

Birefringence
0.0040-0.0070   
0.005-0.009   

Clarity
Color grading system   
Transparent to translucent   

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Emerald and Aquamarine Optic Character

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

Similar to their colors, Emerald and Aquamarine 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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