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Sinhalite
Sinhalite

Omphacite
Omphacite



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Sinhalite
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Omphacite

Sinhalite and Omphacite Optical Properties

Optical Properties

Luster

-
Vitreous

Pleochroism

Trichroism: green light brown dark brownHerve Nicolas Lazzarelli
Weak: colorless -- very pale green -- very pale green

Dispersion

0.020.02
0.005 1
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Transparency

-
TranslucentAnthony et al

Refractive Index

1.665-1.7121.662-1.723
1 3.25
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Optic Character

-
-

Crystal System

Orthorhombic
-

Birefringence

0.036-0.042-9999
0 0.296
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Clarity

TransparentUlrich Henn and Claudio C. Milisenda
TranslucentAnthony et al

Sinhalite and Omphacite Optic Character

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

Similar to their colors, Sinhalite and Omphacite 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.