Chrysoprase and Ettringite Optical Properties

Chrysoprase

Ettringite

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1 Optical Properties

1.1 Luster

Vitreous, Vitreous, Waxy

Vitreous

1.2 Pleochroism

AbsentWalter Schumann

Not Available

1.3 Dispersion

NoneNA

0.007 1

1.4 Transparency

Translucent, Translucent, Opaque, Translucent to nearly opaque

Transparent, Translucent

1.5 Refractive Index

1.530-1.5431.470-1.491

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Trigonal

1.8 Birefringence

0.0040.021

0 0.296

1.9 Clarity

Translucent

Transparent

Chrysoprase and Ettringite Optic Character

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

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