Vesuvianite and Cobaltite Optical Properties

Vesuvianite

Cobaltite

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1 Optical Properties

1.1 Luster

Vitreous, Resinous

Not Available

1.2 Pleochroism

slight in colored varieties

Very weak

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Not Available

Gems

1.5 Refractive Index

1.703-1.752Not Available

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

tetragonal

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

1.8 Birefringence

0.004-0.006Not Available

0 0.296

1.9 Clarity

Not Available

Gems

Vesuvianite and Cobaltite Optic Character

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

Similar to their colors, Vesuvianite 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, Vesuvianite is Not Available while Vesuvianite is Not Available in appearance.