Antigorite and Euclase Optical Properties

Antigorite

Euclase

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1 Optical Properties

1.1 Luster

Waxy, Silky, Resinous, Greasy

Vitreous

1.2 Pleochroism

pale greenish yellow.

Weak: colorless-(greenish) yellow

1.3 Dispersion

NA0.02

0.007 1

1.4 Transparency

Translucent

Gemmological Tables (2004) More from other references

1.5 Refractive Index

1.530-1.5751.650-1.677

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

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

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

1.8 Birefringence

Not Available0.019-0.025

0 0.296

1.9 Clarity

Translucent

TransparentUlrich Henn and Claudio C. Milisenda

Antigorite and Euclase Optic Character

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

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