Euclase and Antigorite Optical Properties

Euclase

Antigorite

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Optical Properties

Luster

Vitreous

Waxy, Silky, Resinous, Greasy

Pleochroism

Weak: colorless-(greenish) yellow

pale greenish yellow

Dispersion

0.020.02

0.005 1

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Transparency

Translucent

Refractive Index

1.650-1.6771.530-1.575

1 3.25

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Optic Character

Crystal System

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

Monoclinic Domatic H-M Symbol (m) Space Group: Cm

Birefringence

0.019-0.025-9999

0 0.296

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Clarity

TransparentUlrich Henn and Claudio C. Milisenda

Translucent

Euclase and Antigorite Optic Character

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

Similar to their colors, Euclase and Antigorite 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, Euclase is while Euclase is in appearance.