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Paraiba and Danburite Optical Properties


Danburite and Paraiba Optical Properties


Optical Properties

Luster
Not Available   
Vitreous, Greasy   

Pleochroism
Not Available   
Weak: pale yellow yellow   

Dispersion
Not Available   
0.02   
22

Transparency
Not Available   
Gemmological Tables (2004) More from other references   

Refractive Index
1.618-1.643   
1.627-1.639   

Optic Character
Not Available   
Biaxial/+   

Crystal System
Not Available   
Orthorhombic   

Birefringence
Not Available   
0.006   

Clarity
Not Available   
TransparentUlrich Henn and Claudio C. Milisenda   

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Paraiba and Danburite Optic Character

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

Similar to their colors, Paraiba 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, Paraiba is Not Available while Paraiba is Not Available in appearance.

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