The average size is 38mm around the edge. Hand picked for the finest available. These are natural mabe pearls within the shell. No two are exactlyalike but all are stunning in their own unique way. This cabochon is created after growing the pearl within a shell that is cut in a round disk shape. The backside is not always pretty. But who cares because the front side is always stunning each in it's own special way. These mabe pearl shell cabochons are not always perfectly flat. We have done our very best to hand pick the flatest most beautiful mabe pearl cabochons for you.