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Dioptase and Gahnospinel Optical Properties


Gahnospinel and Dioptase Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
Weak; dark emerald green   
AbsentWalter Schumann   

Dispersion
0.04   
13
Not Available   

Transparency
TranslucentHerve Nicolas Lazzarelli   
Gemmological Tables (2004)   

Refractive Index
1.644-1.720   
1.735-1.790   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
Isometric   

Birefringence
0.051-0.053   
Not Available   

Clarity
TranslucentHerve Nicolas Lazzarelli   
TransparentUlrich Henn and Claudio C. Milisenda   

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Dioptase and Gahnospinel Optic Character

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

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Dioptase and Gahnospinel Transparency

Similar to their colors, Dioptase and Gahnospinel 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, Dioptase is TranslucentHerve Nicolas Lazzarelli while Dioptase is TranslucentHerve Nicolas Lazzarelli in appearance.

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