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Apatite
Apatite

Cacoxenite
Cacoxenite



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Apatite
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Cacoxenite

Apatite and Cacoxenite Optical Properties

Optical Properties

Luster

Vitreous
Silky

Pleochroism

Blue stones – strong
visible: O = Pale yellow E = Canary yellow to yellow orange

Dispersion

0.010.03
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.628-1.6511.575-1.585
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
Hexagonal

Birefringence

0.002-0.008-9999
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
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Apatite and Cacoxenite Optic Character

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

Apatite and Cacoxenite Transparency

Similar to their colors, Apatite and Cacoxenite 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, Apatite is while Apatite is in appearance.