A perfect octahedron diamond may be cut into two round brilliant cut shapes, for a good yield. During the manufacturing process, it is important to determine the right shape, that will retain as much weight as possible, while also emphasizing the beauty of the stone (through clarity, color, etc.). If you would like to see a selection of beautifully cut rounds, DM us to learn more about the inventory we have available. 
Shown is a 0.52 ct, VS, round champagne diamond,  measuring 5.1 mm. Trade only.