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Lapis lazuli
Lapis lazuli

Sunstone
Sunstone



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Lapis lazuli
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Sunstone

Lapis lazuli and Sunstone Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Greasy
Vitreous
1.2 Pleochroism
AbsentWalter Schumann
Weak or absentWalter Schumann
1.3 Dispersion
NoneNone
Fluorite Optical Properties
0.007 1
1.4 Transparency
Opaque
Transparent, Translucent, Transparent to translucent
1.5 Refractive Index
1.500-1.6701.53-1.55
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Triclinic
1.8 Birefringence
Not Available0.007-0.010
Achroite
0 0.296
1.9 Clarity
Gemstones of the world (2001)
Transparent to translucent

Lapis lazuli and Sunstone Optic Character

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

Similar to their colors, Lapis lazuli and Sunstone 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.