Andesine and Atacamite Optical Properties

Andesine

Atacamite

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1 Optical Properties

1.1 Luster

Vitreous

Adamantine, Vitreous

1.2 Pleochroism

colorless.

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

1.3 Dispersion

0.70NA

0.007 1

1.4 Transparency

Transparent, Translucent, Transparent to translucent

Not Available

1.5 Refractive Index

1.543-1.5641.831

1 3.25

1.6 Optic Character

Biaxial/+

Not Available

1.7 Crystal System

Triclinic

Orthorhombic

1.8 Birefringence

0.007-0.0110.049

0 0.296

1.9 Clarity

Transparent

Not Available

Andesine and Atacamite Optic Character

Andesine and Atacamite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Andesine and Atacamite 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 Andesine and Atacamite 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. Andesine has Biaxial/+ character.

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Andesine and Atacamite Transparency

Similar to their colors, Andesine and Atacamite 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, Andesine is Translucent, Transparent and Transparent to translucent while Andesine is Translucent, Transparent and Transparent to translucent in appearance.