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Fluorapatite
Fluorapatite

Brucite
Brucite



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Fluorapatite
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Brucite

Fluorapatite and Brucite Optical Properties

Optical Properties

Luster

Vitreous, Resinous
Vitreous, Pearly

Pleochroism

Weak to strong if coloreD
-

Dispersion

0.030.03
0.005 1
👆🏻

Transparency

Transparent
TransparentMichael O’Donoghue

Refractive Index

1.631-1.6501.56-1.60
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Hexagonal
Trigonal

Birefringence

-99990.010-0.020
0 0.296
👆🏻

Clarity

Transparent
TransparentMichael O’Donoghue

Fluorapatite and Brucite Optic Character

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

Similar to their colors, Fluorapatite and Brucite 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.