Chrysoprase and Annabergite Optical Properties

Chrysoprase

Annabergite

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1 Optical Properties

1.1 Luster

Vitreous, Vitreous, Waxy

Subadamantine, Pearly

1.2 Pleochroism

AbsentWalter Schumann

Not Available

1.3 Dispersion

NoneNA

0.007 1

1.4 Transparency

Translucent, Translucent, Opaque, Translucent to nearly opaque

Not Available

1.5 Refractive Index

1.530-1.5431.622

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Trigonal

monoclinic

1.8 Birefringence

0.0040.065

0 0.296

1.9 Clarity

Translucent

Not Available

Chrysoprase and Annabergite Optic Character

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

Similar to their colors, Chrysoprase and Annabergite 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, Chrysoprase is Opaque, Translucent, Translucent and Translucent to nearly opaque while Chrysoprase is Opaque, Translucent, Translucent and Translucent to nearly opaque in appearance.