chalcedony

the word 'chalcedony' entered english in the late 14th century via old french 'calcedoine', from latin 'chalcedonius'. this latin term is believed to derive from the greek 'chalkēdōn', found in the biblical book of revelation, though its ultimate origin is uncertain. a prevalent theory suggests it may be named after the ancient greek port city of chalkēdōn (chalcedon) in asia minor, a likely source or trading center for the stone in the classical world. the term has thus traveled from a probable geographical origin through greek and latin into the modern english name for this specific microcrystalline quartz.

the word is a simplex loanword; it cannot be meaningfully segmented into productive morphemes within modern english spelling.