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Celestine
Celestine

Dumortierite
Dumortierite



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Celestine
X
Dumortierite

Celestine and Dumortierite Optical Properties

Optical Properties

Luster

Vitreous, Pearly
Vitreous

Pleochroism

Weakly trichroiC
Strong; X = deep blue or violet; Y = yellow to red-violet or nearly colorless; Z = colorless or very pale blue

Dispersion

0.010.01
0.005 1
👆🏻

Transparency

-
Translucent, Translucent to opaque

Refractive Index

1.619-1.6351.669-1.723
1 3.25
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Optic Character

-
-

Crystal System

Orthorhombic
Orthorhombic

Birefringence

0.004-0.0120.011-0.037
0 0.296
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Clarity

-
Translucent

Celestine and Dumortierite Optic Character

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

Similar to their colors, Celestine and Dumortierite 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.