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Afghanite
Afghanite

Manganotantalite
Manganotantalite



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Afghanite
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Manganotantalite

Afghanite and Manganotantalite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Not Available
1.2 Pleochroism
Not Available
Sometimes strongArthur Thomas
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Gemstones (2009)
TransparentWalter Schumann, Gemstones of the world (2001) More from other references
1.5 Refractive Index
1.5232.19-2.34
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Not Available
1.8 Birefringence
0.0060.015
Achroite
0 0.296
1.9 Clarity
Transparent
TransparentWalter Schumann

Afghanite and Manganotantalite Optic Character

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

Afghanite and Manganotantalite Transparency

Similar to their colors, Afghanite and Manganotantalite 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, Afghanite is Gemstones (2009) and Transparent while Afghanite is Gemstones (2009) and Transparent in appearance.