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Cinnabar and Danburite Optical Properties


Danburite and Cinnabar Optical Properties


Optical Properties

Luster
Adamantine   
Vitreous, Greasy   

Pleochroism
NilArthur Thomas   
Weak: pale yellow yellow   

Dispersion
Not Available   
0.02   
22

Transparency
Translucent   
Gemmological Tables (2004) More from other references   

Refractive Index
2.905-3.25   
1.627-1.639   

Optic Character
Not Available   
Biaxial/+   

Crystal System
Trigonal   
Orthorhombic   

Birefringence
Not Available   
0.006   

Clarity
Translucent   
TransparentUlrich Henn and Claudio C. Milisenda   

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Cinnabar and Danburite Optic Character

Cinnabar and Danburite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Cinnabar and Danburite 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 Cinnabar 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. Danburite has Biaxial/+ character.

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Cinnabar and Danburite Transparency

Similar to their colors, Cinnabar 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, Cinnabar is Translucent while Cinnabar is Translucent in appearance.

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