Rubellite and Erythrite Optical Properties

Rubellite

Erythrite

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1 Optical Properties

1.1 Luster

Not Available

Subadamantine, Pearly

1.2 Pleochroism

Strong: dark red pinkish-redHerve Nicolas Lazzarelli

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

1.3 Dispersion

0.02NA

0.007 1

1.4 Transparency

Transparent, Translucent

Not Available

1.5 Refractive Index

1.614-1.6661.626-1.629

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

monoclinic

1.8 Birefringence

0.014-0.040Not Available

0 0.296

1.9 Clarity

Transparent

Not Available

Rubellite and Erythrite Optic Character

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

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