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Beryllonite
Beryllonite

Rubellite
Rubellite



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Beryllonite
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Rubellite

Beryllonite and Rubellite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Adamantine, Pearly
Not Available
1.2 Pleochroism
AbsentWalter Schumann
Strong: dark red pinkish-redHerve Nicolas Lazzarelli
1.3 Dispersion
0.010.02
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004) More from other references
Transparent, Translucent
1.5 Refractive Index
1.552-1.5621.614-1.666
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Not Available
1.8 Birefringence
0.0090.014-0.040
Achroite
0 0.296
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Beryllonite and Rubellite Optic Character

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

Beryllonite and Rubellite Transparency

Similar to their colors, Beryllonite 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, Beryllonite is Gemmological Tables (2004) More from other references while Beryllonite is Gemmological Tables (2004) More from other references in appearance.