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Emerald and Rosasite Optical Properties


Rosasite and Emerald Optical Properties


Optical Properties

Luster
Vitreous   
Silky, Vitreous   

Pleochroism
Strong dichroism: yellow green Lazzarelli   
Strong: X = pale emerald green or colourless; Y = dark emerald green or pale blue; Z = dark emerald green or pale blue   

Dispersion
0.01   
26
Not Available   

Transparency
Transparent, Translucent, Transparent to translucent   
Not Available   

Refractive Index
1.565-1.602   
1.672-1.688   

Optic Character
Not Available   
Not Available   

Crystal System
Hexagonal   
monoclinic   

Birefringence
0.0040-0.0070   
0.139-0.143   

Clarity
Color grading system   
Not Available   

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Emerald and Rosasite Optic Character

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

Similar to their colors, Emerald and Rosasite 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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