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Rubellite
Rubellite

Benitoite
Benitoite



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Rubellite
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Benitoite

Rubellite and Benitoite Optical Properties

Optical Properties

Luster

-
Vitreous

Pleochroism

Strong: dark red pinkish-redHerve Nicolas Lazzarelli
O = colorless; E = purple

Dispersion

0.020.04
0.005 1
👆🏻

Transparency

Transparent, Translucent
Transparent

Refractive Index

1.614-1.6661.757-1.804
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
Hexagonal

Birefringence

0.014-0.0400.047
0 0.296
👆🏻

Clarity

Transparent
Transparent

Rubellite and Benitoite Optic Character

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

Rubellite and Benitoite Transparency

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