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Lapis lazuli
Lapis lazuli

Mother of Pearl
Mother of Pearl



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Lapis lazuli
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Mother of Pearl

Lapis lazuli and Mother of Pearl Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Greasy
Not Available
1.2 Pleochroism
AbsentWalter Schumann
Not Available
1.3 Dispersion
NoneNA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Opaque
Gemmological Tables (2004)
1.5 Refractive Index
1.500-1.6701.53-1.69
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Not Available
1.8 Birefringence
Not Available0.16
Achroite
0 0.296
1.9 Clarity
Gemstones of the world (2001)
Gemmological Tables (2004)

Lapis lazuli and Mother of Pearl Optic Character

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

Similar to their colors, Lapis lazuli and Mother of Pearl 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.