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Gahnospinel
Gahnospinel

Anhydrite
Anhydrite



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Gahnospinel
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Anhydrite

Gahnospinel and Anhydrite Optical Properties

Optical Properties

Luster

Vitreous
Pearly, Greasy

Pleochroism

-
For violet varieties

Dispersion

0.020.01
0.005 1
👆🏻

Transparency

-
Transparent

Refractive Index

1.735-1.7901.570-1.614
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Isometric
Orthorhombic

Birefringence

-99990.042-0.044
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Gahnospinel and Anhydrite Optic Character

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

Similar to their colors, Gahnospinel and Anhydrite 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.