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Brookite
Brookite

Axinite
Axinite



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Brookite
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Axinite

Brookite and Axinite Optical Properties

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Optical Properties

Luster

Adamantine
Vitreous

Pleochroism

Very weak
Strong

Dispersion

0.200.02
0.005 1
👆🏻

Transparency

-
-

Refractive Index

2.583-2.7411.656-1.704
1 3.25
👆🏻

Optic Character

-
Biaxial/+

Crystal System

Orthorhombic
Triclinic

Birefringence

0.1170.009-0.012
0 0.296
👆🏻

Clarity

-
TransparentUlrich Henn and Claudio C. Milisenda

Brookite and Axinite Optic Character

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

Brookite and Axinite Transparency

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