Guess first began as a denim brand with its first shop opening in Beverly Hills. The brand was founded by brothers Paul and Maurice Marciano. The brandâs success came very quickly, and Guess jeans had become some of the most popular in the world by the 1980s. Guess now produce a range of watches, jewellery and bags along with the iconic clothing collection. The brandâs jewellery has a sleek and elegant style that can be easily styled for any occasion.