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Legrandite
Legrandite

Rubellite
Rubellite



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Legrandite
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Rubellite

Legrandite and Rubellite Optical Properties

Optical Properties

Luster

Vitreous
-

Pleochroism

Colorless
Strong: dark red pinkish-redHerve Nicolas Lazzarelli

Dispersion

0.030.02
0.005 1
👆🏻

Transparency

-
Transparent, Translucent

Refractive Index

1.702-1.7401.614-1.666
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
-

Birefringence

0.0600.014-0.040
0 0.296
👆🏻

Clarity

-
Transparent

Legrandite and Rubellite Optic Character

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

Legrandite and Rubellite Transparency

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