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Jet
Jet

Lazulite
Lazulite



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Lazulite

Jet and Lazulite Optical Properties

Jet
Jet
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1 Optical Properties
1.1 Luster
Waxy
Not Available
1.2 Pleochroism
AbsentWalter Schumann
Transparent crystals show a strong pleochroism: colorless light blue dark (violet) blueHerve Nicolas Lazzarelli
1.3 Dispersion
None0.01
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004) More from other references
Transparent, Translucent
1.5 Refractive Index
1.640-1.6801.604-1.646
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Amorphous
monoclinic
1.8 Birefringence
Not Available0.031-0.036
Achroite
0 0.296
1.9 Clarity
Gemmological Tables (2004) More from other references
Transparent

Jet and Lazulite Optic Character

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

Jet and Lazulite Transparency

Similar to their colors, Jet and Lazulite 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, Jet is Gemmological Tables (2004) More from other references while Jet is Gemmological Tables (2004) More from other references in appearance.