Piemontite and Erythrite Optical Properties

Piemontite

Erythrite

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1 Optical Properties

1.1 Luster

Vitreous

Subadamantine, Pearly

1.2 Pleochroism

visible

Visible: X = pale pinkish to pale rose; Y = pale violet to pale violet-rose; Z = deep red

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Not Available

1.5 Refractive Index

1.725-1.7561.626-1.629

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

monoclinic

1.8 Birefringence

0.025-0.076Not Available

0 0.296

1.9 Clarity

Not Available

Piemontite and Erythrite Optic Character

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

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Piemontite and Erythrite Transparency

Similar to their colors, Piemontite and Erythrite 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 Not Available while Piemontite is Not Available in appearance.