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Spodumene
Spodumene

Thulite
Thulite



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Spodumene
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Thulite

Spodumene and Thulite Optical Properties

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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous
Strong in kunzite: α-purple
0.02
Transparent
1.657-1.681
-
monoclinic
0.014-0.018
-
 
Vitreous
Present
0.02
Opaque, Translucent, Opaque . May be translucent in thin backlit sections.
1.695
-
Orthorhombic
0.006-0.018
OpaqueHerve Nicolas Lazzarelli

Spodumene and Thulite Optic Character

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

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