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Sinhalite
Sinhalite

Cordierite
Cordierite



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Sinhalite
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Cordierite

Sinhalite and Cordierite Optical Properties

Optical Properties

Luster

-
Greasy, Vitreous

Pleochroism

Trichroism: green light brown dark brownHerve Nicolas Lazzarelli
X = pale yellow

Dispersion

0.020.01
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.665-1.712-9999
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
Orthorhombic

Birefringence

0.036-0.042-9999
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
-

Sinhalite and Cordierite Optic Character

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

Similar to their colors, Sinhalite and Cordierite 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.