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Sinhalite
Sinhalite

Riebeckite
Riebeckite



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Sinhalite
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Riebeckite

Sinhalite and Riebeckite Optical Properties

Optical Properties

Luster

-
Vitreous, Silky

Pleochroism

Trichroism: green light brown dark brownHerve Nicolas Lazzarelli
X = blue

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.665-1.7121.680-1.698
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
monoclinic

Birefringence

0.036-0.0420.005-0.008
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
-

Sinhalite and Riebeckite Optic Character

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

Sinhalite and Riebeckite Transparency

Similar to their colors, Sinhalite and Riebeckite 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, Sinhalite is while Sinhalite is in appearance.