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Danburite
Danburite

Cinnabar
Cinnabar



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Danburite
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Cinnabar

Danburite and Cinnabar Optical Properties

Optical Properties

Luster

Vitreous, Greasy
Adamantine

Pleochroism

Weak: pale yellow yellow
-

Dispersion

0.020.06
0.005 1
👆🏻

Transparency

-
Translucent

Refractive Index

1.627-1.6392.905-3.25
1 3.25
👆🏻

Optic Character

Biaxial/+
-

Crystal System

Orthorhombic
Trigonal

Birefringence

0.006-9999
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Translucent

Danburite and Cinnabar Optic Character

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

Danburite and Cinnabar Transparency

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