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Celestine
Celestine

Thulite
Thulite



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Celestine
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Thulite

Celestine and Thulite Optical Properties

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Optical Properties

Luster

Vitreous, Pearly
Vitreous

Pleochroism

Weakly trichroiC
Present

Dispersion

0.010.02
0.005 1
👆🏻

Transparency

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

Refractive Index

1.619-1.6351.695
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
Orthorhombic

Birefringence

0.004-0.0120.006-0.018
0 0.296
👆🏻

Clarity

-
OpaqueHerve Nicolas Lazzarelli

Celestine and Thulite Optic Character

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

Celestine and Thulite Transparency

Similar to their colors, Celestine 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, Celestine is while Celestine is in appearance.