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Cryolite and Emerald Optical Properties


Emerald and Cryolite Optical Properties


Optical Properties

Luster
Vitreous, Greasy, Pearly   
Vitreous   

Pleochroism
colorless.   
Strong dichroism: yellow green Lazzarelli   

Dispersion
Not Available   
0.01   
26

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

Refractive Index
1.338-1.339   
1.565-1.602   

Optic Character
Not Available   
Not Available   

Crystal System
monoclinic   
Hexagonal   

Birefringence
0.001   
0.0040-0.0070   

Clarity
TransparentUlrich Henn and Claudio C. Milisenda   
Color grading system   

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Cryolite and Emerald Optic Character

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

Similar to their colors, Cryolite and Emerald 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, Cryolite is Gemmological Tables (2004) More from other references while Cryolite is Gemmological Tables (2004) More from other references in appearance.

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