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Fluorapatite
Fluorapatite

Aragonite
Aragonite



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Fluorapatite
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Aragonite

Fluorapatite and Aragonite Optical Properties

Optical Properties

Luster

Vitreous, Resinous
Vitreous, Resinous

Pleochroism

Weak to strong if coloreD
StrongArthur Thomas

Dispersion

0.030.17
0.005 1
👆🏻

Transparency

Transparent
Transparent, Translucent

Refractive Index

1.631-1.6501.525-1.686
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
Orthorhombic

Birefringence

-99990.155
0 0.296
👆🏻

Clarity

Transparent
Transparent

Fluorapatite and Aragonite Optic Character

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

Fluorapatite and Aragonite Transparency

Similar to their colors, Fluorapatite and Aragonite 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, Fluorapatite is Transparent while Fluorapatite is Transparent in appearance.