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Lazulite
Lazulite

Omphacite
Omphacite



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Lazulite
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Omphacite

Lazulite and Omphacite Optical Properties

Optical Properties

Luster

-
Vitreous

Pleochroism

Transparent crystals show a strong pleochroism: colorless light blue dark (violet) blueHerve Nicolas Lazzarelli
Weak: colorless -- very pale green -- very pale green

Dispersion

0.010.02
0.005 1
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Transparency

Transparent, Translucent
TranslucentAnthony et al

Refractive Index

1.604-1.6461.662-1.723
1 3.25
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Optic Character

-
-

Crystal System

monoclinic
-

Birefringence

0.031-0.036-9999
0 0.296
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Clarity

Transparent
TranslucentAnthony et al

Lazulite and Omphacite Optic Character

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

Similar to their colors, Lazulite and Omphacite 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.