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Aragonite
Aragonite

Chalcedony
Chalcedony



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Aragonite
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Chalcedony

Aragonite and Chalcedony Optical Properties

Optical Properties

Luster

Vitreous, Resinous
Vitreous

Pleochroism

StrongArthur Thomas
-

Dispersion

0.170.01
0.005 1
👆🏻

Transparency

Transparent, Translucent
Translucent, Translucent to opaque

Refractive Index

1.525-1.6861.530-1.543
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Orthorhombic
Trigonal

Birefringence

0.1550.003-0.009
0 0.296
👆🏻

Clarity

Transparent
Translucent

Aragonite and Chalcedony Optic Character

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

Aragonite and Chalcedony Transparency

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