Atacamite and Crocoite Optical Properties

Atacamite

Crocoite

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1 Optical Properties

1.1 Luster

Adamantine, Vitreous

Adamantine

1.2 Pleochroism

X = pale green; Y = yellow-green; Z = grass-green

Distinctly trichroic

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Not Available

Transparent

1.5 Refractive Index

1.8312.31-2.66

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Orthorhombic

Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/n

1.8 Birefringence

0.049Not Available

0 0.296

1.9 Clarity

Not Available

Transparent

Atacamite and Crocoite Optic Character

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

Similar to their colors, Atacamite and Crocoite 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, Atacamite is Not Available while Atacamite is Not Available in appearance.