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Fluorapatite
Fluorapatite

Apophyllite
Apophyllite



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Fluorapatite
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Apophyllite

Fluorapatite and Apophyllite Optical Properties

Optical Properties

Luster

Vitreous, Resinous
Vitreous, Pearly

Pleochroism

Weak to strong if coloreD
Dichroic (colorless)

Dispersion

0.030.01
0.005 1
👆🏻

Transparency

Transparent
Transparent, Translucent

Refractive Index

1.631-1.6501.530-1.543
1 3.25
👆🏻

Optic Character

-
Uniaxial/-

Crystal System

Hexagonal
tetragonal

Birefringence

-99990.000-0.003
0 0.296
👆🏻

Clarity

Transparent
Transparent

Fluorapatite and Apophyllite Optic Character

Fluorapatite and Apophyllite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Fluorapatite and Apophyllite 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 Apophyllite 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. Apophyllite has Uniaxial/- character.

Fluorapatite and Apophyllite Transparency

Similar to their colors, Fluorapatite and Apophyllite 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.