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Lapis lazuli
Lapis lazuli

Lazulite
Lazulite



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Lazulite

Lapis lazuli and Lazulite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Greasy
Not Available
1.2 Pleochroism
AbsentWalter Schumann
Transparent crystals show a strong pleochroism: colorless light blue dark (violet) blueHerve Nicolas Lazzarelli
1.3 Dispersion
Albite Optical ..
None
Rank: N/A (Overall)
0.01
Rank: 26 (Overall)
Fluorite Optical Properties
1.4 Transparency
Opaque
Transparent, Translucent
1.5 Refractive Index
1.500-1.670
1.604-1.646
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
monoclinic
1.8 Birefringence
Not Available
0.031-0.036
1.9 Clarity
Gemstones of the world (2001)
Transparent

Lapis lazuli and Lazulite Optic Character

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

Lapis lazuli and Lazulite Transparency

Similar to their colors, Lapis lazuli 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, Lapis lazuli is Opaque while Lapis lazuli is Opaque in appearance.