Diamond cut can also be separated by their faceting method: brilliant-cut and step-cut, to be exact. Brilliant-cut diamonds have more facets than step-cut diamonds and include round, princess ...

a 12.03-carat Fancy Vivid Blue diamond that fetched $48.5 million at Sotheby’s Geneva in 2015, and The De Beers Blue, a 15.10-carat step-cut Fancy Vivid Blue diamond that sold for $57.5 million ...