This is retro vintage Japanese akoya saltwater cultured pearl & sterling silver flower brooch.

The pearl measures 6.00mm round. It has good luster with light rosy pink overtones.

It is made of solid sterling silver and is a darker tone. It is not stamped but tested as solid sterling silver. It measures 2 inches long. From the mid-century. 

All pearls are truly vintage and have only been lightly cleaned. Could use a professional polish if desired.