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Sinhalite
Sinhalite

Sugilite
Sugilite



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Sinhalite
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Sugilite

Sinhalite and Sugilite Optical Properties

Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
-
Trichroism: green light brown dark brownHerve Nicolas Lazzarelli
0.02
-
1.665-1.712
-
Orthorhombic
0.036-0.042
TransparentUlrich Henn and Claudio C. Milisenda
 
Vitreous
Weak
0.02
Translucent
1.607-1.612
-
Hexagonal
0.003
Translucent

Sinhalite and Sugilite Optic Character

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

Similar to their colors, Sinhalite and Sugilite 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.