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Axinite
Axinite

Rubellite
Rubellite



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Axinite
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Rubellite

Axinite and Rubellite Optical Properties

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Optical Properties

Luster

Vitreous
-

Pleochroism

Strong
Strong: dark red pinkish-redHerve Nicolas Lazzarelli

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

-
Transparent, Translucent

Refractive Index

1.656-1.7041.614-1.666
1 3.25
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Optic Character

Biaxial/+
-

Crystal System

Triclinic
-

Birefringence

0.009-0.0120.014-0.040
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Axinite and Rubellite Optic Character

Axinite and Rubellite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Axinite 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 Axinite 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. Axinite has Biaxial/+ character.

Axinite and Rubellite Transparency

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