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Fluorapatite
Fluorapatite

Augite
Augite



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Fluorapatite
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Augite

Fluorapatite and Augite Optical Properties

Optical Properties

Luster

Vitreous, Resinous
Vitreous, Resinous

Pleochroism

Weak to strong if coloreD
Pale green

Dispersion

0.030.02
0.005 1
👆🏻

Transparency

Transparent
Transparent, Translucent

Refractive Index

1.631-1.6501.671-1.774
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/c

Birefringence

-9999-9999
0 0.296
👆🏻

Clarity

Transparent
Transparent

Fluorapatite and Augite Optic Character

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

Similar to their colors, Fluorapatite and Augite 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.