Piemontite and Euclase Optical Properties

Piemontite

Euclase

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1 Optical Properties

1.1 Luster

Vitreous

1.2 Pleochroism

visible

Weak: colorless-(greenish) yellow

1.3 Dispersion

NA0.02

0.007 1

1.4 Transparency

Not Available

Gemmological Tables (2004) More from other references

1.5 Refractive Index

1.725-1.7561.650-1.677

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

monoclinic

Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a

1.8 Birefringence

0.025-0.0760.019-0.025

0 0.296

1.9 Clarity

Not Available

TransparentUlrich Henn and Claudio C. Milisenda

Piemontite and Euclase Optic Character

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

Similar to their colors, Piemontite and Euclase 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.