Variscite and Chrome-Chalcedony Optical Properties

Variscite

Chrome-Chalcedony

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1 Optical Properties

1.1 Luster

Vitreous, Waxy

Waxy

1.2 Pleochroism

MissingWalter Schumann

Not Available

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Translucent, Opaque . May be translucent when backlit on the edges.

Translucent

1.5 Refractive Index

1.560-1.5941.530-1.543

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Orthorhombic

Not Available

1.8 Birefringence

0.0310.003-0.009

0 0.296

1.9 Clarity

Translucent

Variscite and Chrome-Chalcedony Optic Character

Variscite and Chrome-Chalcedony optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Variscite and Chrome-Chalcedony 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 Variscite and Chrome-Chalcedony 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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Variscite and Chrome-Chalcedony Transparency

Similar to their colors, Variscite and Chrome-Chalcedony 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, Variscite is Opaque . May be translucent when backlit on the edges. and Translucent while Variscite is Opaque . May be translucent when backlit on the edges. and Translucent in appearance.