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Brookite
Brookite

Kyanite
Kyanite



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Brookite
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Kyanite

Brookite and Kyanite Optical Properties

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Optical Properties

Luster

Adamantine
Vitreous, Pearly

Pleochroism

Very weak
Trichroic

Dispersion

0.200.02
0.005 1
👆🏻

Transparency

-
-

Refractive Index

2.583-2.7411.71-1.74
1 3.25
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Optic Character

-
-

Crystal System

Orthorhombic
Triclinic

Birefringence

0.117-9999
0 0.296
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Clarity

-
-

Brookite and Kyanite Optic Character

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

Brookite and Kyanite Transparency

Similar to their colors, Brookite and Kyanite 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.