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Axinite
Axinite

Amethyst
Amethyst



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Axinite
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Amethyst

Axinite and Amethyst Optical Properties

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Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

Strong
None

Dispersion

0.020.01
0.005 1
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Transparency

-
Transparent, Transparent to translucent

Refractive Index

1.656-1.7041.544-1.553
1 3.25
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Optic Character

Biaxial/+
-

Crystal System

Triclinic
Trigonal

Birefringence

0.009-0.0120.009
0 0.296
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Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Axinite and Amethyst Optic Character

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

Similar to their colors, Axinite and Amethyst 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.