The princess cut is the most modern of the popular diamond shapes. Based on the square French cut, which has an X facet pattern but many fewer facets, the princess cut diamond has its beginning in the 1960s. A diamond cutter in London named Arpad Nagy launched a new square diamond cut that he officially named the Profile Cut but also sometimes referred to as the princess cut. At around the same time in South Africa, Basil Watermeyer began working on an 81-facet rectangular cut called the Barion Cut, which combined the brilliance of a round with the rectangular outline of an emerald cut. Both cuts were patented in 1971 so the patents have now expired.