Riebeckite and Erythrite Optical Properties

Riebeckite

Erythrite

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1 Optical Properties

1.1 Luster

Vitreous, Silky

Subadamantine, Pearly

1.2 Pleochroism

X = blue

Visible: X = pale pinkish to pale rose; Y = pale violet to pale violet-rose; Z = deep red

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Not Available

1.5 Refractive Index

1.680-1.6981.626-1.629

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

monoclinic

1.8 Birefringence

0.005-0.008Not Available

0 0.296

1.9 Clarity

Not Available

Riebeckite and Erythrite Optic Character

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

Similar to their colors, Riebeckite and Erythrite 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.