Dreicer & Co was one of the leading American jewellers of the early twentieth century. Though their early history remains largely obscured, they are believed to have originated as J. Dreicer & Son, under which name they exhibited at the 1904 International Exposition in St Louis. The firm had a boutique at 560 Fifth Avenue, and particularly specialized in diamond and pearl set jewellery which is said to have rivalled that of Cartier. They also held a branch at the elite Blackstone Hotel in Chicago. Upon the death of Michael Dreicer, the founder's son, in 1923, the company was liquidated and its stock was purchased by Cartier for 2.5 million dollars.