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Lapis lazuli
Lapis lazuli

Adamite
Adamite



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Lapis lazuli
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Adamite

Lapis lazuli and Adamite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Greasy
Vitreous
1.2 Pleochroism
AbsentWalter Schumann
NilArthur Thomas
1.3 Dispersion
NoneNA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Opaque
Transparent
1.5 Refractive Index
1.500-1.6701.708-1.722
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Biaxial/+
1.7 Crystal System
Trigonal
Orthorhombic
1.8 Birefringence
Not Available0.031-0.050
Achroite
0 0.296
1.9 Clarity
Gemstones of the world (2001)
Transparent

Lapis lazuli and Adamite Optic Character

Lapis lazuli and Adamite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Lapis lazuli and Adamite 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 Adamite 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. Adamite has Biaxial/+ character.

Lapis lazuli and Adamite Transparency

Similar to their colors, Lapis lazuli and Adamite 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.