Lazulite and Jet Optical Properties

Lazulite

Jet

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1 Optical Properties

1.1 Luster

Not Available

Waxy

1.2 Pleochroism

Transparent crystals show a strong pleochroism: colorless light blue dark (violet) blueHerve Nicolas Lazzarelli

AbsentWalter Schumann

1.3 Dispersion

0.01None

0.007 1

1.4 Transparency

Transparent, Translucent

Gemmological Tables (2004) More from other references

1.5 Refractive Index

1.604-1.6461.640-1.680

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

monoclinic

Amorphous

1.8 Birefringence

0.031-0.036Not Available

0 0.296

1.9 Clarity

Transparent

Gemmological Tables (2004) More from other references

Lazulite and Jet Optic Character

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

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Lazulite and Jet Transparency

Similar to their colors, Lazulite and Jet 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, Lazulite is Translucent and Transparent while Lazulite is Translucent and Transparent in appearance.