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Emerald
Emerald

Danburite
Danburite



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Emerald
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Danburite

Emerald and Danburite Optical Properties

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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous
Strong dichroism: yellow green Lazzarelli
0.01
Transparent, Translucent, Transparent to translucent
1.565-1.602
-
Hexagonal
0.0040-0.0070
-
 
Vitreous, Greasy
Weak: pale yellow yellow
0.02
-
1.627-1.639
Biaxial/+
Orthorhombic
0.006
TransparentUlrich Henn and Claudio C. Milisenda

Emerald and Danburite Optic Character

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

Emerald and Danburite Transparency

Similar to their colors, Emerald and Danburite 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 while Emerald is in appearance.