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Danburite and Axinite Optical Properties


Axinite and Danburite Optical Properties


Optical Properties

Luster
Vitreous, Greasy   
Vitreous   

Pleochroism
Weak: pale yellow yellow   
Strong   

Dispersion
0.02   
22
0.02   
21

Transparency
Gemmological Tables (2004) More from other references   
Gemmological Tables (2004) More from other references   

Refractive Index
1.627-1.639   
1.656-1.704   

Optic Character
Biaxial/+   
Biaxial/+   

Crystal System
Orthorhombic   
Triclinic   

Birefringence
0.006   
0.009-0.012   

Clarity
TransparentUlrich Henn and Claudio C. Milisenda   
TransparentUlrich Henn and Claudio C. Milisenda   

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Danburite and Axinite Optic Character

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

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Danburite and Axinite Transparency

Similar to their colors, Danburite and Axinite 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 Gemmological Tables (2004) More from other references while Danburite is Gemmological Tables (2004) More from other references in appearance.

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