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Malachite
Malachite

Axinite
Axinite



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Malachite
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Axinite

Malachite and Axinite Optical Properties

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Optical Properties

Luster

Adamantine, Vitreous, Silky
Vitreous

Pleochroism

-
Strong

Dispersion

0.040.02
0.005 1
👆🏻

Transparency

Opaque
-

Refractive Index

1.655-1.9091.656-1.704
1 3.25
👆🏻

Optic Character

-
Biaxial/+

Crystal System

monoclinic
Triclinic

Birefringence

0.2540.009-0.012
0 0.296
👆🏻

Clarity

-
TransparentUlrich Henn and Claudio C. Milisenda

Malachite and Axinite Optic Character

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

Malachite and Axinite Transparency

Similar to their colors, Malachite and Axinite 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, Malachite is Opaque while Malachite is Opaque in appearance.