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Taaffeite
Taaffeite

Lazulite
Lazulite



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Taaffeite
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Lazulite

Taaffeite and Lazulite Optical Properties

Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous
Weak
0.02
-
1.70-1.73
-
Hexagonal
0.055
-
 
-
Transparent crystals show a strong pleochroism: colorless light blue dark (violet) blueHerve Nicolas Lazzarelli
0.01
Transparent, Translucent
1.604-1.646
-
monoclinic
0.031-0.036
Transparent

Taaffeite and Lazulite Optic Character

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

Taaffeite and Lazulite Transparency

Similar to their colors, Taaffeite 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, Taaffeite is while Taaffeite is in appearance.