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Manganotantalite
Manganotantalite

Cobaltite
Cobaltite



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Manganotantalite
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Cobaltite

Manganotantalite and Cobaltite Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Not Available
1.2 Pleochroism
Sometimes strongArthur Thomas
Very weak
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
TransparentWalter Schumann, Gemstones of the world (2001) More from other references
Gems
1.5 Refractive Index
2.19-2.34Not Available
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Orthorhombic Pyramidal H-M Symbol (mm2) Space Group: P ca21
1.8 Birefringence
0.015Not Available
Achroite
0 0.296
1.9 Clarity
TransparentWalter Schumann
Gems

Manganotantalite and Cobaltite Optic Character

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

Manganotantalite and Cobaltite Transparency

Similar to their colors, Manganotantalite and Cobaltite 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, Manganotantalite is Gemstones of the world (2001) More from other references and TransparentWalter Schumann while Manganotantalite is Gemstones of the world (2001) More from other references and TransparentWalter Schumann in appearance.