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Annabergite
Annabergite

Beryl
Beryl



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Annabergite
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Beryl

Annabergite and Beryl Optical Properties

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Optical Properties

Luster

Subadamantine, Pearly
Vitreous, Resinous

Pleochroism

-
Weak to distinct

Dispersion

0.030.01
0.005 1
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Transparency

-
Transparent, Transparent to opaque

Refractive Index

1.6221.560-1.604
1 3.25
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Optic Character

-
-

Crystal System

monoclinic
Hexagonal

Birefringence

0.0650.0040-0.0070
0 0.296
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Clarity

-
Transparent

Annabergite and Beryl Optic Character

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

Annabergite and Beryl Transparency

Similar to their colors, Annabergite and Beryl 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, Annabergite is while Annabergite is in appearance.