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Glaucophane
Glaucophane

Gahnospinel
Gahnospinel



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Glaucophane
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Gahnospinel

Glaucophane and Gahnospinel Optical Properties

Optical Properties

Luster

Vitreous, Pearly
Vitreous

Pleochroism

Strong
-

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.606-1.6371.735-1.790
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
Isometric

Birefringence

-9999-9999
0 0.296
👆🏻

Clarity

-
TransparentUlrich Henn and Claudio C. Milisenda

Glaucophane and Gahnospinel Optic Character

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

Glaucophane and Gahnospinel Transparency

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