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Piemontite
Piemontite

Beryl
Beryl



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Piemontite
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Beryl

Piemontite and Beryl Optical Properties

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Optical Properties

Luster

Vitreous
Vitreous, Resinous

Pleochroism

visible
Weak to distinct

Dispersion

0.020.01
0.005 1
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Transparency

-
Transparent, Transparent to opaque

Refractive Index

1.725-1.7561.560-1.604
1 3.25
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Optic Character

-
-

Crystal System

monoclinic
Hexagonal

Birefringence

0.025-0.0760.0040-0.0070
0 0.296
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Clarity

-
Transparent

Piemontite and Beryl Optic Character

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

Piemontite and Beryl Transparency

Similar to their colors, Piemontite 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, Piemontite is while Piemontite is in appearance.