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Manganotantalite
Manganotantalite

Purpurite
Purpurite



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Manganotantalite
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Purpurite

Manganotantalite and Purpurite Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Not Available
1.2 Pleochroism
Sometimes strongArthur Thomas
StrongArthur Thomas
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
TransparentWalter Schumann, Gemstones of the world (2001) More from other references
TranslucentWalter Schumann, Gemstones of the world (2001) More from other references
1.5 Refractive Index
2.19-2.341.85-1.92
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Orthorhombic
1.8 Birefringence
0.0150.070
Achroite
0 0.296
1.9 Clarity
TransparentWalter Schumann
TranslucentWalter Schumann

Manganotantalite and Purpurite Optic Character

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

Similar to their colors, Manganotantalite and Purpurite 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.