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Pyrophyllite
Pyrophyllite

Gahnospinel
Gahnospinel



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Pyrophyllite
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Gahnospinel

Pyrophyllite and Gahnospinel Optical Properties

Optical Properties

Luster

Pearly
Vitreous

Pleochroism

-
-

Dispersion

0.050.02
0.005 1
👆🏻

Transparency

Translucent
-

Refractive Index

1.534-1.6011.735-1.790
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Isometric

Birefringence

0.050-9999
0 0.296
👆🏻

Clarity

Translucent
TransparentUlrich Henn and Claudio C. Milisenda

Pyrophyllite and Gahnospinel Optic Character

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

Pyrophyllite and Gahnospinel Transparency

Similar to their colors, Pyrophyllite 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, Pyrophyllite is Translucent while Pyrophyllite is Translucent in appearance.