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Pleonaste
Pleonaste

Beryllonite
Beryllonite



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Pleonaste
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Beryllonite

Pleonaste and Beryllonite Optical Properties

Optical Properties

Luster

-
Vitreous, Adamantine, Pearly

Pleochroism

-
-

Dispersion

0.030.01
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.7801.552-1.562
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
monoclinic

Birefringence

-99990.009
0 0.296
👆🏻

Clarity

-
TransparentUlrich Henn and Claudio C. Milisenda

Pleonaste and Beryllonite Optic Character

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

Pleonaste and Beryllonite Transparency

Similar to their colors, Pleonaste and Beryllonite 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, Pleonaste is while Pleonaste is in appearance.