Jewelry Design Magnum Opus Blue Watch by Kyoung T. Kim The pursuit and passion for the perfect timepiece has brought forth the birth of Aritani watches. The four main diamonds on the face of the watch is our signature design, and can only be created at Aritani. Our master craftsmen personally handcraft all our watches, thus creating the ultimate timepiece. This 18k white gold watch features over 8 carats of round cut diamonds, including the 4 main diamonds on the face of the watch.