Home
Gemstones


Villiaumite and Lazulite Optical Properties


Lazulite and Villiaumite Optical Properties


Optical Properties

Luster
Not Available   
Not Available   

Pleochroism
Yellow to pink/deep carmineMichael O’Donoghue   
Transparent crystals show a strong pleochroism: colorless light blue dark (violet) blueHerve Nicolas Lazzarelli   

Dispersion
Not Available   
0.01   
26

Transparency
Gemmological Tables (2004) More from other references   
Transparent, Translucent   

Refractive Index
1.328-1.332   
1.604-1.646   

Optic Character
Not Available   
Not Available   

Crystal System
Not Available   
monoclinic   

Birefringence
Not Available   
0.031-0.036   

Clarity
TransparentUlrich Henn and Claudio C. Milisenda   
Transparent   

Benefits >>
<< Physical Properties

Villiaumite and Lazulite Optic Character

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

Compare Gems Found in America

Villiaumite and Lazulite Transparency

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

Gems Found in America

Gems Found in America


Compare Gems Found in America