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Charoite
Charoite

Danburite
Danburite



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Charoite
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Danburite

Charoite and Danburite Optical Properties

Optical Properties

Luster

Pearly, Chatoyant
Vitreous, Greasy

Pleochroism

-
Weak: pale yellow yellow

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

Translucent
-

Refractive Index

1.545-1.5601.627-1.639
1 3.25
👆🏻

Optic Character

-
Biaxial/+

Crystal System

Triclinic
Orthorhombic

Birefringence

0.0090.006
0 0.296
👆🏻

Clarity

Translucent
TransparentUlrich Henn and Claudio C. Milisenda

Charoite and Danburite Optic Character

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

Charoite and Danburite Transparency

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