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Narsarsukite
Narsarsukite

Lapis lazuli
Lapis lazuli



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Narsarsukite
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Lapis lazuli

Narsarsukite and Lapis lazuli Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Pearly
Vitreous, Greasy
1.2 Pleochroism
Weak; O = colorless to yellow; E = colorless to honey-yellow
AbsentWalter Schumann
1.3 Dispersion
NANone
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
Opaque
1.5 Refractive Index
1.610-1.6471.500-1.670
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
tetragonal
Trigonal
1.8 Birefringence
0.021Not Available
Achroite
0 0.296
1.9 Clarity
Transparent
Gemstones of the world (2001)

Narsarsukite and Lapis lazuli Optic Character

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

Narsarsukite and Lapis lazuli Transparency

Similar to their colors, Narsarsukite 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, Narsarsukite is Translucent and Transparent while Narsarsukite is Translucent and Transparent in appearance.