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Lapis lazuli and Hiddenite Optical Properties


Hiddenite and Lapis lazuli Optical Properties


Optical Properties

Luster
Vitreous, Greasy   
Vitreous   

Pleochroism
AbsentWalter Schumann   
Distinct trichroism: yellow green green blue greenHerve Nicolas Lazzarelli   

Dispersion
None   
0.02   
22

Transparency
Opaque   
Transparent   

Refractive Index
1.500-1.670   
1.657-1.681   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
monoclinic   

Birefringence
Not Available   
0.014-0.016   

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

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Lapis lazuli and Hiddenite Optic Character

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

Similar to their colors, Lapis lazuli and Hiddenite 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.

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