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Afghanite
Afghanite

Beryl
Beryl



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Afghanite
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Beryl

Afghanite and Beryl Optical Properties

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Optical Properties

Luster

Vitreous
Vitreous, Resinous

Pleochroism

-
Weak to distinct

Dispersion

0.020.01
0.005 1
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Transparency

Transparent
Transparent, Transparent to opaque

Refractive Index

1.5231.560-1.604
1 3.25
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Optic Character

-
-

Crystal System

Trigonal
Hexagonal

Birefringence

0.0060.0040-0.0070
0 0.296
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Clarity

Transparent
Transparent

Afghanite and Beryl Optic Character

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

Afghanite and Beryl Transparency

Similar to their colors, Afghanite 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, Afghanite is Transparent while Afghanite is Transparent in appearance.