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Poudretteite
Poudretteite

Glaucophane
Glaucophane



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Poudretteite
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Glaucophane

Poudretteite and Glaucophane Optical Properties

Optical Properties

Luster

Vitreous
Vitreous, Pearly

Pleochroism

Colorless
Strong

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.511-1.5321.606-1.637
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
monoclinic

Birefringence

0.021-9999
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
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Poudretteite and Glaucophane Optic Character

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

Poudretteite and Glaucophane Transparency

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