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Nephrite
Nephrite

Manganotantalite
Manganotantalite



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Nephrite
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Manganotantalite

Nephrite and Manganotantalite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Greasy
Not Available
1.2 Pleochroism
None
Sometimes strongArthur Thomas
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
TransparentWalter Schumann, Gemstones of the world (2001) More from other references
1.5 Refractive Index
1.600-1.6272.19-2.34
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Not Available
1.8 Birefringence
0.0270.015
Achroite
0 0.296
1.9 Clarity
Translucent
TransparentWalter Schumann

Nephrite and Manganotantalite Optic Character

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

Nephrite and Manganotantalite Transparency

Similar to their colors, Nephrite 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, Nephrite is Translucent while Nephrite is Translucent in appearance.