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Alunite
Alunite

Fluorapatite
Fluorapatite



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Alunite
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Fluorapatite

Alunite and Fluorapatite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Pearly
Vitreous, Resinous
1.2 Pleochroism
Not Available
Weak to strong if coloreD
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Not Available
Transparent
1.5 Refractive Index
1.5721.631-1.650
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Hexagonal
1.8 Birefringence
0.020Not Available
Achroite
0 0.296
1.9 Clarity
Not Available
Transparent

Alunite and Fluorapatite Optic Character

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

Alunite and Fluorapatite Transparency

Similar to their colors, Alunite and Fluorapatite 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, Alunite is Not Available while Alunite is Not Available in appearance.