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Gahnospinel
Gahnospinel

Dioptase
Dioptase



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Gahnospinel
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Dioptase

Gahnospinel and Dioptase Optical Properties

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

-
Weak; dark emerald green

Dispersion

0.020.04
0.005 1
👆🏻

Transparency

-
TranslucentHerve Nicolas Lazzarelli

Refractive Index

1.735-1.7901.644-1.720
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Isometric
Trigonal

Birefringence

-99990.051-0.053
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
TranslucentHerve Nicolas Lazzarelli

Gahnospinel and Dioptase Optic Character

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

Gahnospinel and Dioptase Transparency

Similar to their colors, Gahnospinel 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, Gahnospinel is while Gahnospinel is in appearance.