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Sard
Sard

Beryl
Beryl



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Sard
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Beryl

Sard and Beryl Optical Properties

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Optical Properties

Luster

Waxy
Vitreous, Resinous

Pleochroism

-
Weak to distinct

Dispersion

0.010.01
0.005 1
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Transparency

Translucent
Transparent, Transparent to opaque

Refractive Index

1.535-1.5391.560-1.604
1 3.25
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Optic Character

-
-

Crystal System

-
Hexagonal

Birefringence

0.008-0.0100.0040-0.0070
0 0.296
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Clarity

Translucent
Transparent

Sard and Beryl Optic Character

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

Sard and Beryl Transparency

Similar to their colors, Sard 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, Sard is Translucent while Sard is Translucent in appearance.