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Lazulite
Lazulite

Axinite
Axinite



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Lazulite
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Axinite

Lazulite and Axinite Optical Properties

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Optical Properties

Luster

-
Vitreous

Pleochroism

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

Dispersion

0.010.02
0.005 1
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Transparency

Transparent, Translucent
-

Refractive Index

1.604-1.6461.656-1.704
1 3.25
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Optic Character

-
Biaxial/+

Crystal System

monoclinic
Triclinic

Birefringence

0.031-0.0360.009-0.012
0 0.296
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Clarity

Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Lazulite and Axinite Optic Character

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

Lazulite and Axinite Transparency

Similar to their colors, Lazulite 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, Lazulite is Transparent and Translucent while Lazulite is Transparent and Translucent in appearance.