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Beryllonite
Beryllonite

Apatite
Apatite



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Beryllonite
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Apatite

Beryllonite and Apatite Optical Properties

Optical Properties

Luster

Vitreous, Adamantine, Pearly
Vitreous

Pleochroism

-
Blue stones – strong

Dispersion

0.010.01
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.552-1.5621.628-1.651
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
Hexagonal

Birefringence

0.0090.002-0.008
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
TransparentUlrich Henn and Claudio C. Milisenda

Beryllonite and Apatite Optic Character

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

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