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Lapis lazuli
Lapis lazuli

Chrysoprase
Chrysoprase



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Lapis lazuli
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Chrysoprase

Lapis lazuli and Chrysoprase Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Greasy
Vitreous, Vitreous, Waxy
1.2 Pleochroism
AbsentWalter Schumann
AbsentWalter Schumann
1.3 Dispersion
NoneNone
Fluorite Optical Properties
0.007 1
1.4 Transparency
Opaque
Translucent, Translucent, Opaque, Translucent to nearly opaque
1.5 Refractive Index
1.500-1.6701.530-1.543
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Trigonal
1.8 Birefringence
Not Available0.004
Achroite
0 0.296
1.9 Clarity
Gemstones of the world (2001)
Translucent

Lapis lazuli and Chrysoprase Optic Character

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

Similar to their colors, Lapis lazuli and Chrysoprase 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.