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Shattuckite
Shattuckite

Sinhalite
Sinhalite



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Shattuckite
X
Sinhalite

Shattuckite and Sinhalite Optical Properties

Optical Properties

Luster

Silky
-

Pleochroism

X = very pale blue; Y = pale blue; Z = deep blue
Trichroism: green light brown dark brownHerve Nicolas Lazzarelli

Dispersion

0.020.02
0.005 1
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Transparency

Translucent
-

Refractive Index

1.752-1.8151.665-1.712
1 3.25
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Optic Character

-
-

Crystal System

Orthorhombic
Orthorhombic

Birefringence

0.0630.036-0.042
0 0.296
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Clarity

Translucent
TransparentUlrich Henn and Claudio C. Milisenda

Shattuckite and Sinhalite Optic Character

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

Similar to their colors, Shattuckite and Sinhalite 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.