Quartz and Chrome-Chalcedony Optical Properties

Quartz

Chrome-Chalcedony

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Optical Properties

Luster

Vitreous

Waxy

Pleochroism

None

Dispersion

0.010.01

0.005 1

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Transparency

Transparent, Translucent, Transparent to translucent

Translucent

Refractive Index

1.544-1.5531.530-1.543

1 3.25

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Optic Character

Crystal System

Trigonal

Birefringence

0.0090.003-0.009

0 0.296

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Clarity

Opaque

Translucent

Quartz and Chrome-Chalcedony Optic Character

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

Similar to their colors, Quartz 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, Quartz is Transparent, Translucent and Transparent to translucent while Quartz is Transparent, Translucent and Transparent to translucent in appearance.