Norbergite and Cobaltite Optical Properties

Norbergite

Cobaltite

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1 Optical Properties

1.1 Luster

Vitreous

Not Available

1.2 Pleochroism

Pale yellow very pale yellow colorlessAnthony et al

Very weak

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Transparent

Gems

1.5 Refractive Index

1.563-1.593Not Available

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

Orthorhombic Pyramidal H-M Symbol (mm2) Space Group: P ca21

1.8 Birefringence

Not AvailableNot Available

0 0.296

1.9 Clarity

Transparent

Gems

Norbergite and Cobaltite Optic Character

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

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Norbergite and Cobaltite Transparency

Similar to their colors, Norbergite 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, Norbergite is Transparent while Norbergite is Transparent in appearance.