A diamond cutter is a person who specializes in cutting and polishing diamonds. They use specialized tools to shape the diamond into the desired shape and size. The two crossword solutions for the term diamond cutter are MOWER (5 letters) and SOSA (4 letters). MOWER is an occupational name for someone who cuts grass or other vegetation with a machine, while Sosa is a Spanish surname derived from the Latin word for 'SUMMER'.