Aa 1-carat diamond can variety drastically counting on inclusive ofupdated the diamond's satisfacupupdated, which incorporates the 4Cs (carat weight, reduce, coloration, and clarity), updated marketplace situations. however, as a up to dateugh estimate, you can assume locate 1-carat diamonds beginning from round $3,000 and going up to $20,000 or greater for better-superb diamonds.