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Sinhalite
Sinhalite

Benitoite
Benitoite



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Sinhalite
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Benitoite

Sinhalite and Benitoite Optical Properties

Optical Properties

Luster

-
Vitreous

Pleochroism

Trichroism: green light brown dark brownHerve Nicolas Lazzarelli
O = colorless; E = purple

Dispersion

0.020.04
0.005 1
👆🏻

Transparency

-
Transparent

Refractive Index

1.665-1.7121.757-1.804
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
Hexagonal

Birefringence

0.036-0.0420.047
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Transparent

Sinhalite and Benitoite Optic Character

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

Similar to their colors, Sinhalite and Benitoite 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.