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Shattuckite
Shattuckite

Ludlamite
Ludlamite



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Shattuckite
X
Ludlamite

Shattuckite and Ludlamite Optical Properties

Optical Properties

Luster

Silky
Vitreous, Pearly

Pleochroism

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

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

Translucent
-

Refractive Index

1.752-1.8151.653-1.693
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
monoclinic

Birefringence

0.0630.038-0.044
0 0.296
👆🏻

Clarity

Translucent
TransparentUlrich Henn and Claudio C. Milisenda

Shattuckite and Ludlamite Optic Character

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

Similar to their colors, Shattuckite and Ludlamite 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.