Chrysoprase and Tugtupite Optical Properties

Chrysoprase

Tugtupite

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1 Optical Properties

1.1 Luster

Vitreous, Vitreous, Waxy

Not Available

1.2 Pleochroism

AbsentWalter Schumann

ModerateArthur Thomas

1.3 Dispersion

NoneNA

0.007 1

1.4 Transparency

Translucent, Translucent, Opaque, Translucent to nearly opaque

OpaqueHerve Nicolas Lazzarelli

1.5 Refractive Index

1.530-1.5431.494-1.504

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Trigonal

tetragonal

1.8 Birefringence

0.0040.008

0 0.296

1.9 Clarity

Translucent

OpaqueHerve Nicolas Lazzarelli

Chrysoprase and Tugtupite Optic Character

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

Similar to their colors, Chrysoprase and Tugtupite 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.