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Poudretteite
Poudretteite

Rubellite
Rubellite



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Poudretteite
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Rubellite

Poudretteite and Rubellite Optical Properties

Optical Properties

Luster

Vitreous
-

Pleochroism

Colorless
Strong: dark red pinkish-redHerve Nicolas Lazzarelli

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

-
Transparent, Translucent

Refractive Index

1.511-1.5321.614-1.666
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
-

Birefringence

0.0210.014-0.040
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Poudretteite and Rubellite Optic Character

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

Similar to their colors, Poudretteite and Rubellite 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.