Sodalite and Rubellite Tourmaline Optical Properties

Sodalite

Rubellite Tourmaline

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1 Optical Properties

1.1 Luster

Greasy

Not Available

1.2 Pleochroism

AbsentWalter Schumann

Not Available

1.3 Dispersion

0.02NA

0.007 1

1.4 Transparency

Transparent, Translucent, Opaque

Opaque

1.5 Refractive Index

1.478-1.488Not Available

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

cubic

Isometric

1.8 Birefringence

Not AvailableNot Available

0 0.296

1.9 Clarity

Transparent

Opaque

Sodalite and Rubellite Tourmaline Optic Character

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

Similar to their colors, Sodalite and Rubellite Tourmaline 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.