Rose-cut diamonds are some of the earliest cuts that are found in diamond history. Rose cut diamonds were introduced as early as the 1500's and were popular until the early 1900's. The shape of a rose cut diamond resembles the petals of a rose bud. The bottom is flat. The crown of Rose-cut diamond is domed shaped and the facets meet in a point in the center. The number of facets varies from 3,6,12,18,to 24 facets.