Elbaite and Antigorite Optical Properties

Elbaite

Antigorite

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1 Optical Properties

1.1 Luster

Vitreous

Waxy, Silky, Resinous, Greasy

1.2 Pleochroism

Pale green

pale greenish yellow.

1.3 Dispersion

0.02NA

0.007 1

1.4 Transparency

Transparent

Translucent

1.5 Refractive Index

1.614-1.6661.530-1.575

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Trigonal

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

1.8 Birefringence

0.014-0.032Not Available

0 0.296

1.9 Clarity

Transparent

Translucent

Elbaite and Antigorite Optic Character

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

Similar to their colors, Elbaite 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, Elbaite is Transparent while Elbaite is Transparent in appearance.