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Neptunite
Neptunite

Fluorapatite
Fluorapatite



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Neptunite
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Fluorapatite

Neptunite and Fluorapatite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous, Resinous
1.2 Pleochroism
x=yellow-orange
Weak to strong if coloreD
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Translucent
Transparent
1.5 Refractive Index
1.692-1.734
1.631-1.650
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Hexagonal
1.8 Birefringence
0.0294-0.0452
Not Available
1.9 Clarity
Translucent
Transparent

Neptunite and Fluorapatite Optic Character

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

Neptunite and Fluorapatite Transparency

Similar to their colors, Neptunite 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, Neptunite is Translucent while Neptunite is Translucent in appearance.