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Fluorapatite
Fluorapatite

Almandine
Almandine



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Fluorapatite
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Almandine

Fluorapatite and Almandine Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Resinous
Greasy, Vitreous
1.2 Pleochroism
Weak to strong if coloreD
None
1.3 Dispersion
NA0.03
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.631-1.6501.770-1.820
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Hexagonal
cubic
1.8 Birefringence
Not AvailableNot Available
Achroite
0 0.296
1.9 Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Fluorapatite and Almandine Optic Character

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

Similar to their colors, Fluorapatite and Almandine 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.