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Chrysocolla
Chrysocolla

Lapis lazuli
Lapis lazuli



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Chrysocolla
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Lapis lazuli

Chrysocolla and Lapis lazuli Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Greasy
Vitreous, Greasy
1.2 Pleochroism
AbsentWalter Schumann
AbsentWalter Schumann
1.3 Dispersion
NoneNone
Fluorite Optical Properties
0.007 1
1.4 Transparency
Opaque
Opaque
1.5 Refractive Index
1.460-1.5701.500-1.670
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Trigonal
1.8 Birefringence
0.023-0.050Not Available
Achroite
0 0.296
1.9 Clarity
Gemmological Tables (2004) More from other references
Gemstones of the world (2001)

Chrysocolla and Lapis lazuli Optic Character

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

Chrysocolla and Lapis lazuli Transparency

Similar to their colors, Chrysocolla 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, Chrysocolla is Opaque while Chrysocolla is Opaque in appearance.