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Ammolite
Ammolite

Apatite
Apatite



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Ammolite
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Apatite

Ammolite and Apatite Optical Properties

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Optical Properties

Luster

Silky, Vitreous
Vitreous

Pleochroism

None
Blue stones – strong

Dispersion

0.010.01
0.005 1
👆🏻

Transparency

-
-

Refractive Index

1.520-1.6701.628-1.651
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
Hexagonal

Birefringence

0.135-0.1450.002-0.008
0 0.296
👆🏻

Clarity

-
TransparentUlrich Henn and Claudio C. Milisenda

Ammolite and Apatite Optic Character

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

Ammolite and Apatite Transparency

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