Sodalite and Shattuckite Optical Properties

Sodalite

Shattuckite

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1 Optical Properties

1.1 Luster

Greasy

Silky

1.2 Pleochroism

AbsentWalter Schumann

X = very pale blue; Y = pale blue; Z = deep blue

1.3 Dispersion

0.02NA

0.007 1

1.4 Transparency

Transparent, Translucent, Opaque

Translucent

1.5 Refractive Index

1.478-1.4881.752-1.815

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

cubic

Orthorhombic

1.8 Birefringence

Not Available0.063

0 0.296

1.9 Clarity

Transparent

Translucent

Sodalite and Shattuckite Optic Character

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

Similar to their colors, Sodalite and Shattuckite 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.