Riebeckite and Jet Optical Properties

Riebeckite

Jet

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1 Optical Properties

1.1 Luster

Vitreous, Silky

Waxy

1.2 Pleochroism

X = blue

AbsentWalter Schumann

1.3 Dispersion

NANone

0.007 1

1.4 Transparency

Not Available

Gemmological Tables (2004) More from other references

1.5 Refractive Index

1.680-1.6981.640-1.680

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

monoclinic

Amorphous

1.8 Birefringence

0.005-0.008Not Available

0 0.296

1.9 Clarity

Not Available

Gemmological Tables (2004) More from other references

Riebeckite and Jet Optic Character

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

Similar to their colors, Riebeckite 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, Riebeckite is Not Available while Riebeckite is Not Available in appearance.