Cmj London is a luxury jewellery brand that has been producing and selling their collections since the 1980s. Their collections are produced in the UK, and are based around classical shapes, with a contemporary twist. Some of their collections have included 18th Century designs, and have also been influenced by the Art Deco periods of the 1920s and 1930s. The brand is known for their wide range of products, which includes necklaces, earrings, rings, bracelets, watches and brooches. Cmj London also produces replica pieces from renowned designers such as Van Cleef & Arpels, Chanel, Hermes and Harry Winston. Cmj London was created in 1981 by Arnaud de Jonghe in Paris. De Jonghe was inspired by the Art Deco period of the 1920s and 1930s to create a jewellery line with a contemporary twist. The brand gained momentum when they began working with well-known designers such as Harry Winston and Van Cleef & Arpels to produce pieces that were replicas of pieces from these designers. In 2009, Cmj London opened their first flagship store in London's Covent Garden.