The most popular shape of cut for a diamond, with a round silhouette when viewed from the top, or Faceup. The round brilliant cut has a girdle and 57 facets (plus a facet on the Culet on some stones). Many versions have been developed over the past century, including:

Mine Cut / Miner’s CutOld European CutTolkowsky CutHearts and Arrows CutIdeal CutSuper Ideal Cut

round
Photo courtesy of Union Diamond