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Cobaltite
Cobaltite

Nephrite
Nephrite



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Cobaltite
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Nephrite

Cobaltite and Nephrite Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Vitreous, Greasy
1.2 Pleochroism
Very weak
None
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gems
Translucent
1.5 Refractive Index
Not Available1.600-1.627
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic Pyramidal H-M Symbol (mm2) Space Group: P ca21
monoclinic
1.8 Birefringence
Not Available0.027
Achroite
0 0.296
1.9 Clarity
Gems
Translucent

Cobaltite and Nephrite Optic Character

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

Cobaltite and Nephrite Transparency

Similar to their colors, Cobaltite and Nephrite 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, Cobaltite is Gems while Cobaltite is Gems in appearance.