Shattuckite and Steatite Optical Properties

Shattuckite

Steatite

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1 Optical Properties

1.1 Luster

Silky

Not Available

1.2 Pleochroism

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

Not Available

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Translucent

Gemmological Tables (2004)

1.5 Refractive Index

1.752-1.8151.539-1.596

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Orthorhombic

Not Available

1.8 Birefringence

0.0630.046-0.050

0 0.296

1.9 Clarity

Translucent

OpaqueUlrich Henn and Claudio C. Milisenda

Shattuckite and Steatite Optic Character

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

Similar to their colors, Shattuckite and Steatite 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, Shattuckite is Translucent while Shattuckite is Translucent in appearance.