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Danburite and Dioptase Optical Properties


Dioptase and Danburite Optical Properties


Optical Properties

Luster
Vitreous, Greasy   
Vitreous   

Pleochroism
Weak: pale yellow yellow   
Weak; dark emerald green   

Dispersion
0.02   
22
0.04   
13

Transparency
Gemmological Tables (2004) More from other references   
TranslucentHerve Nicolas Lazzarelli   

Refractive Index
1.627-1.639   
1.644-1.720   

Optic Character
Biaxial/+   
Not Available   

Crystal System
Orthorhombic   
Trigonal   

Birefringence
0.006   
0.051-0.053   

Clarity
TransparentUlrich Henn and Claudio C. Milisenda   
TranslucentHerve Nicolas Lazzarelli   

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Danburite and Dioptase Optic Character

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

Similar to their colors, Danburite and Dioptase 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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