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Benitoite
Benitoite

Lazurite
Lazurite



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Benitoite
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Lazurite

Benitoite and Lazurite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous
1.2 Pleochroism
O = colorless; E = purple
Not Available
1.3 Dispersion
0.04NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.757-1.8041.500
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Hexagonal
Isometric
1.8 Birefringence
0.047Not Available
Achroite
0 0.296
1.9 Clarity
Transparent
Gemmological Tables (2004) More from other references

Benitoite and Lazurite Optic Character

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

Benitoite and Lazurite Transparency

Similar to their colors, Benitoite and Lazurite 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, Benitoite is Transparent while Benitoite is Transparent in appearance.