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Datolite and Danburite Optical Properties


Danburite and Datolite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous, Greasy   

Pleochroism
NilArthur Thomas   
Weak: pale yellow yellow   

Dispersion
0.02   
23
0.02   
22

Transparency
Transparent   
Gemmological Tables (2004) More from other references   

Refractive Index
1.621-1.675   
1.627-1.639   

Optic Character
Not Available   
Biaxial/+   

Crystal System
monoclinic   
Orthorhombic   

Birefringence
0.044   
0.006   

Clarity
Transparent   
TransparentUlrich Henn and Claudio C. Milisenda   

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Datolite and Danburite Optic Character

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

Similar to their colors, Datolite 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, Datolite is Transparent while Datolite is Transparent in appearance.

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