Chrysoprase and Antigorite Optical Properties

Chrysoprase

Antigorite

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1 Optical Properties

1.1 Luster

Vitreous, Vitreous, Waxy

Waxy, Silky, Resinous, Greasy

1.2 Pleochroism

AbsentWalter Schumann

pale greenish yellow.

1.3 Dispersion

NoneNA

0.007 1

1.4 Transparency

Translucent, Translucent, Opaque, Translucent to nearly opaque

Translucent

1.5 Refractive Index

1.530-1.5431.530-1.575

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Trigonal

Monoclinic Domatic H-M Symbol (m) Space Group: Cm

1.8 Birefringence

0.004Not Available

0 0.296

1.9 Clarity

Translucent

Chrysoprase and Antigorite Optic Character

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

Similar to their colors, Chrysoprase and Antigorite 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.