This is a lovely mid-century modern Japanese akoya saltwater cultured pearl cluster brooch with a detailed braided leaf design.

The pearls are 5.25-6.00mm round. They have fantastic luster with sharp rosy pink overtones. 

It is made of solid sterling silver. The leaves have a diamond brushed texture with engraved details. It is stamped "STERLING". It measures 2 3/8 inches long. From Japan 1940's-1960's. 

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