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Lazulite
Lazulite

Cavansite
Cavansite



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Lazulite
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Cavansite

Lazulite and Cavansite Optical Properties

Optical Properties

Luster

-
Vitreous, Pearly

Pleochroism

Transparent crystals show a strong pleochroism: colorless light blue dark (violet) blueHerve Nicolas Lazzarelli
Visible: X=Z= colorless Y= blue

Dispersion

0.010.04
0.005 1
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Transparency

Transparent, Translucent
-

Refractive Index

1.604-1.6461.542
1 3.25
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Optic Character

-
-

Crystal System

monoclinic
Orthorhombic

Birefringence

0.031-0.0360.009
0 0.296
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Clarity

Transparent
-

Lazulite and Cavansite Optic Character

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

Similar to their colors, Lazulite and Cavansite 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.