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Brookite
Brookite

Lazulite
Lazulite



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Brookite
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Lazulite

Brookite and Lazulite Optical Properties

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Optical Properties

Luster

Adamantine
-

Pleochroism

Very weak
Transparent crystals show a strong pleochroism: colorless light blue dark (violet) blueHerve Nicolas Lazzarelli

Dispersion

0.200.01
0.005 1
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Transparency

-
Transparent, Translucent

Refractive Index

2.583-2.7411.604-1.646
1 3.25
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Optic Character

-
-

Crystal System

Orthorhombic
monoclinic

Birefringence

0.1170.031-0.036
0 0.296
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Clarity

-
Transparent

Brookite and Lazulite Optic Character

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

Similar to their colors, Brookite and Lazulite 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.