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Fluorapatite
Fluorapatite

Tantalite
Tantalite



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Fluorapatite
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Tantalite

Fluorapatite and Tantalite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Resinous
Resinous
1.2 Pleochroism
Weak to strong if coloreD
Not Available
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
TransparentWalter Schumann, Gemstones of the world (2001) More from other references
1.5 Refractive Index
1.631-1.6502.190-2.457
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Hexagonal
Orthorhombic
1.8 Birefringence
Not Available0.083
Achroite
0 0.296
1.9 Clarity
Transparent
TransparentWalter Schumann

Fluorapatite and Tantalite Optic Character

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

Similar to their colors, Fluorapatite and Tantalite 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.