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Lapis lazuli
Lapis lazuli

Cavansite
Cavansite



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Lapis lazuli
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Cavansite

Lapis lazuli and Cavansite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Greasy
Vitreous, Pearly
1.2 Pleochroism
AbsentWalter Schumann
Visible: X=Z= colorless Y= blue
1.3 Dispersion
NoneNA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Opaque
Not Available
1.5 Refractive Index
1.500-1.6701.542
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Orthorhombic
1.8 Birefringence
Not Available0.009
Achroite
0 0.296
1.9 Clarity
Gemstones of the world (2001)
Not Available

Lapis lazuli and Cavansite Optic Character

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

Similar to their colors, Lapis lazuli and Cavansite 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.