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Lapis lazuli
Lapis lazuli

Rhodochrosite
Rhodochrosite



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Lapis lazuli
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Rhodochrosite

Lapis lazuli and Rhodochrosite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Greasy
Vitreous
1.2 Pleochroism
AbsentWalter Schumann
Weak
1.3 Dispersion
None0.02
Fluorite Optical Properties
0.007 1
1.4 Transparency
Opaque
Transparent, Opaque, Transparent to nearly opaque
1.5 Refractive Index
1.500-1.6701.60
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Trigonal
1.8 Birefringence
Not Available0.208-0.220
Achroite
0 0.296
1.9 Clarity
Gemstones of the world (2001)
Transparent to nearly opaque

Lapis lazuli and Rhodochrosite Optic Character

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

Similar to their colors, Lapis lazuli and Rhodochrosite 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.