Chalcedony rhymes with:
acrimony, alimony, aramony, ceremony, matrimony, palimony, parsimony, patrimony, sanctimony, telephony, testimony
Chalcedony sounds like:
celestin, celestina, celestine, celestino, classaction, claxton, clewiston, clogston, closedown, clugston, collection, collocation, colston, coulston, cyclostome