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Shattuckite
Shattuckite

Thulite
Thulite



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Shattuckite
X
Thulite

Shattuckite and Thulite Optical Properties

Optical Properties

Luster

Silky
Vitreous

Pleochroism

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

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

Translucent
Opaque, Translucent, Opaque . May be translucent in thin backlit sections.

Refractive Index

1.752-1.8151.695
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
Orthorhombic

Birefringence

0.0630.006-0.018
0 0.296
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Clarity

Translucent
OpaqueHerve Nicolas Lazzarelli

Shattuckite and Thulite Optic Character

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

Shattuckite and Thulite Transparency

Similar to their colors, Shattuckite and Thulite 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.