Rosasite and Cobaltite Optical Properties

Rosasite

Cobaltite

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1 Optical Properties

1.1 Luster

Silky, Vitreous

Not Available

1.2 Pleochroism

Strong: X = pale emerald green or colourless; Y = dark emerald green or pale blue; Z = dark emerald green or pale blue

Very weak

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Not Available

Gems

1.5 Refractive Index

1.672-1.688Not Available

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

monoclinic

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

1.8 Birefringence

0.139-0.143Not Available

0 0.296

1.9 Clarity

Not Available

Gems

Rosasite and Cobaltite Optic Character

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

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