Chrysoprase and Willemite Optical Properties

Chrysoprase

Willemite

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1 Optical Properties

1.1 Luster

Vitreous, Vitreous, Waxy

Vitreous, Resinous

1.2 Pleochroism

AbsentWalter Schumann

NilArthur Thomas

1.3 Dispersion

NoneNA

0.007 1

1.4 Transparency

Translucent, Translucent, Opaque, Translucent to nearly opaque

Transparent, Translucent

1.5 Refractive Index

1.530-1.5431.687-1.723

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Trigonal

1.8 Birefringence

0.0040.028-0.030

0 0.296

1.9 Clarity

Translucent

Transparent

Chrysoprase and Willemite Optic Character

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

Similar to their colors, Chrysoprase and Willemite 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.