This is a lovely mid-century modern Japanese akoya saltwater cultured pearl cluster brooch with floral details.

The pearls are 5.00-7.00mm round. They have fantastic luster with sharp rosy pink overtones. 

It is made of solid sterling silver and is set among brushed textured and high polished leaves. It is stamped "S" for sterling silver. It measures 2 1/4 inches long. From Japan 1950's-1960's. 

All pearls are truly vintage and have only been lightly cleaned.