In the Bronze Age chalcedony was in use in the Mediterranean region; for example, on Minoan Crete at the Palace of Knossos, chalcedony seals have been recovered dating to circa 1800 BC.

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Bronze Age

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Wikipedia contributors. (2023, September 27). Chalcedony. In Wikipedia, The Free Encyclopedia. Retrieved November 2, 2023, from https://en.wikipedia.org/w/index.php?title=Chalcedony&oldid=1177486095

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chalcedony

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Lincoln County — Thumbnail History (historylink.org) Lincoln County, formed in 1883, is located in northeast Washington in the region historically known as Big Bend Country. The county measures 2311.2 square miles, ranking it seventh in size among Washington’s 39 counties.

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Chalcedony (Wikipedia) Chalcedony (/kælˈsɛdəni/ kal-SED-ə-nee, or /ˈkælsəˌdoʊni/ KAL-sə-doh-nee) is a cryptocrystalline form of silica, composed of very fine intergrowths of quartz and moganite. These are both silica minerals, but they differ in that quartz has a trigonal crystal structure, while moganite is monoclinic. Chalcedony’s standard chemical structure (based on the chemical structure of quartz) is SiO2 (silicon dioxide).

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Mediterranean
Minoan Crete
Palace of Knossos
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