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Celestine
Celestine

Apatite
Apatite



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Celestine
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Apatite

Celestine and Apatite Optical Properties

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Optical Properties

Luster

Vitreous, Pearly
Vitreous

Pleochroism

Weakly trichroiC
Blue stones – strong

Dispersion

0.010.01
0.005 1
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Transparency

-
-

Refractive Index

1.619-1.6351.628-1.651
1 3.25
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Optic Character

-
-

Crystal System

Orthorhombic
Hexagonal

Birefringence

0.004-0.0120.002-0.008
0 0.296
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Clarity

-
TransparentUlrich Henn and Claudio C. Milisenda

Celestine and Apatite Optic Character

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

Similar to their colors, Celestine and Apatite 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.