In addition to being fascinating, chalcedony has historical significance. The term "stone" is derived from the Latin "chalcedonian." Though chalcedony is now found all over the world, including in the US, New Zealand, Brazil, and Austria, it was originally discovered close to the Turkish city of Chalcedon. Chalcedony is a kind of quartz that is a member of the delicate family. The vivid colors of this stone are what give it its attractiveness. 

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