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Labradorite
Labradorite

Lapis lazuli
Lapis lazuli



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Lapis lazuli

Labradorite and Lapis lazuli Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Pearly
Vitreous, Greasy
1.2 Pleochroism
From the Congo
AbsentWalter Schumann
1.3 Dispersion
Albite Optical ..
0.01
Rank: 28 (Overall)
None
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Transparent, Translucent, Transparent to translucent
Opaque
1.5 Refractive Index
1.554-1.573
1.500-1.670
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Triclinic
Trigonal
1.8 Birefringence
0.008-0.010
Not Available
1.9 Clarity
Transparent
Gemstones of the world (2001)

Labradorite and Lapis lazuli Optic Character

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

Labradorite and Lapis lazuli Transparency

Similar to their colors, Labradorite 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, Labradorite is Translucent, Transparent and Transparent to translucent while Labradorite is Translucent, Transparent and Transparent to translucent in appearance.