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Spodumene
Spodumene

Sinhalite
Sinhalite



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Spodumene
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Sinhalite

Spodumene and Sinhalite Optical Properties

Optical Properties

Luster

Vitreous
-

Pleochroism

Strong in kunzite: α-purple
Trichroism: green light brown dark brownHerve Nicolas Lazzarelli

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

Transparent
-

Refractive Index

1.657-1.6811.665-1.712
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
Orthorhombic

Birefringence

0.014-0.0180.036-0.042
0 0.296
👆🏻

Clarity

-
TransparentUlrich Henn and Claudio C. Milisenda

Spodumene and Sinhalite Optic Character

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

Spodumene and Sinhalite Transparency

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