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Lazulite
Lazulite

Cuprite
Cuprite



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Lazulite
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Cuprite

Lazulite and Cuprite Optical Properties

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Optical Properties

Luster

-
Adamantine

Pleochroism

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

Dispersion

0.010.05
0.005 1
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Transparency

Transparent, Translucent
TranslucentWalter Schumann

Refractive Index

1.604-1.6462.849
1 3.25
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Optic Character

-
-

Crystal System

monoclinic
cubic

Birefringence

0.031-0.036-9999
0 0.296
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Clarity

Transparent
TranslucentWalter Schumann

Lazulite and Cuprite Optic Character

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

Lazulite and Cuprite Transparency

Similar to their colors, Lazulite and Cuprite 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.