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Turquoise
Turquoise

Thulite
Thulite



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Turquoise
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Thulite

Turquoise and Thulite Optical Properties

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Optical Properties

Luster

Waxy
Vitreous

Pleochroism

Weak
Present

Dispersion

0.030.02
0.005 1
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Transparency

Translucent, Opaque
Opaque, Translucent, Opaque . May be translucent in thin backlit sections.

Refractive Index

1.610-1.6501.695
1 3.25
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Optic Character

-
-

Crystal System

Triclinic
Orthorhombic

Birefringence

0.0400.006-0.018
0 0.296
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Clarity

Translucent
OpaqueHerve Nicolas Lazzarelli

Turquoise and Thulite Optic Character

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

Turquoise and Thulite Transparency

Similar to their colors, Turquoise 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, Turquoise is Translucent and Opaque while Turquoise is Translucent and Opaque in appearance.