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Leucite and Lapis lazuli Optical Properties


Lapis lazuli and Leucite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous, Greasy   

Pleochroism
Not Available   
AbsentWalter Schumann   

Dispersion
0.01   
29
None   

Transparency
Gemmological Tables (2004) More from other references   
Opaque   

Refractive Index
1.504-1.510   
1.500-1.670   

Optic Character
Not Available   
Not Available   

Crystal System
tetragonal   
Trigonal   

Birefringence
0.001   
Not Available   

Clarity
TransparentUlrich Henn and Claudio C. Milisenda   
Gemstones of the world (2001)   

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Leucite and Lapis lazuli Optic Character

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

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Leucite and Lapis lazuli Transparency

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

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