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Axinite
Axinite

Sapphire
Sapphire



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Axinite
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Sapphire

Axinite and Sapphire Optical Properties

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Optical Properties

Luster

Vitreous
Vitreous, Adamantine

Pleochroism

Strong
Strong

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

-
Transparent, Translucent, Transparent to opaque

Refractive Index

1.656-1.7041.762-1.788
1 3.25
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Optic Character

Biaxial/+
-

Crystal System

Triclinic
Trigonal

Birefringence

0.009-0.0120.008-0.009
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Axinite and Sapphire Optic Character

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

Similar to their colors, Axinite and Sapphire 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.