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Ulexite
Ulexite

Rubellite
Rubellite



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Ulexite
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Rubellite

Ulexite and Rubellite Optical Properties

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Optical Properties

Luster

-
-

Pleochroism

-
Strong: dark red pinkish-redHerve Nicolas Lazzarelli

Dispersion

0.060.02
0.005 1
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Transparency

Transparent
Transparent, Translucent

Refractive Index

1.491-1.5201.614-1.666
1 3.25
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Optic Character

-
-

Crystal System

-
-

Birefringence

0.0290.014-0.040
0 0.296
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Clarity

Transparent
Transparent

Ulexite and Rubellite Optic Character

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

Ulexite and Rubellite Transparency

Similar to their colors, Ulexite 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, Ulexite is Transparent while Ulexite is Transparent in appearance.