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Lapis lazuli
Lapis lazuli

Pyrope
Pyrope



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Lapis lazuli
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Pyrope

Lapis lazuli and Pyrope Optical Properties

Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous, Greasy
-
-
Opaque
1.500-1.670
-
Trigonal
-9999
-
 
Greasy, Vitreous
None
0.02
-
1.720-1.756
-
cubic
-9999
TransparentUlrich Henn and Claudio C. Milisenda

Lapis lazuli and Pyrope Optic Character

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

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