Sodalite and Antigorite Optical Properties

Sodalite

Antigorite

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1 Optical Properties

1.1 Luster

Greasy

Waxy, Silky, Resinous, Greasy

1.2 Pleochroism

AbsentWalter Schumann

pale greenish yellow.

1.3 Dispersion

Albite Optical ..

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0.02

Rank: 21 (Overall)▶

Not Available

Rank: N/A (Overall)▶

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Fluorite Optical Properties

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0.044 (Anglesite Opt..)

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1.4 Transparency

Transparent, Translucent, Opaque

Translucent

1.5 Refractive Index

1.478-1.488

1.530-1.575

1.6 Optic Character

Not Available

1.7 Crystal System

cubic

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

1.8 Birefringence

Not Available

1.9 Clarity

Transparent

Translucent

Sodalite and Antigorite Optic Character

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

Similar to their colors, Sodalite 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, Sodalite is Opaque, Translucent and Transparent while Sodalite is Opaque, Translucent and Transparent in appearance.