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Lazulite
Lazulite

Aragonite
Aragonite



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Lazulite
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Aragonite

Lazulite and Aragonite Optical Properties

Optical Properties

Luster

-
Vitreous, Resinous

Pleochroism

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

Dispersion

0.010.17
0.005 1
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Transparency

Transparent, Translucent
Transparent, Translucent

Refractive Index

1.604-1.6461.525-1.686
1 3.25
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Optic Character

-
-

Crystal System

monoclinic
Orthorhombic

Birefringence

0.031-0.0360.155
0 0.296
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Clarity

Transparent
Transparent

Lazulite and Aragonite Optic Character

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

Similar to their colors, Lazulite and Aragonite 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.