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Andradite
Andradite

Beryl
Beryl



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Andradite
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Beryl

Andradite and Beryl Optical Properties

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Optical Properties

Luster

Adamantine, Resinous
Vitreous, Resinous

Pleochroism

-
Weak to distinct

Dispersion

0.060.01
0.005 1
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Transparency

Transparent
Transparent, Transparent to opaque

Refractive Index

1.88-1.941.560-1.604
1 3.25
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Optic Character

-
-

Crystal System

cubic
Hexagonal

Birefringence

0.0570.0040-0.0070
0 0.296
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Clarity

Transparent
Transparent

Andradite and Beryl Optic Character

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

Andradite and Beryl Transparency

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