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Variscite
Variscite

Lapis lazuli
Lapis lazuli



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Variscite
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Lapis lazuli

Variscite and Lapis lazuli Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Waxy
Vitreous, Greasy
1.2 Pleochroism
MissingWalter Schumann
AbsentWalter Schumann
1.3 Dispersion
NANone
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent, Opaque . May be translucent when backlit on the edges.
Opaque
1.5 Refractive Index
1.560-1.5941.500-1.670
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
Trigonal
1.8 Birefringence
0.031Not Available
Achroite
0 0.296
1.9 Clarity
Translucent
Gemstones of the world (2001)

Variscite and Lapis lazuli Optic Character

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

Variscite and Lapis lazuli Transparency

Similar to their colors, Variscite 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, Variscite is Opaque . May be translucent when backlit on the edges. and Translucent while Variscite is Opaque . May be translucent when backlit on the edges. and Translucent in appearance.