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Pleonaste
Pleonaste

Gahnite
Gahnite



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Pleonaste
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Gahnite

Pleonaste and Gahnite Optical Properties

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Optical Properties

Luster

-
Vitreous

Pleochroism

-
-

Dispersion

0.030.03
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.7801.790-1.818
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
cubic

Birefringence

-9999-9999
0 0.296
👆🏻

Clarity

-
TransparentUlrich Henn and Claudio C. Milisenda

Pleonaste and Gahnite Optic Character

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

Pleonaste and Gahnite Transparency

Similar to their colors, Pleonaste and Gahnite 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, Pleonaste is while Pleonaste is in appearance.