This is a lovely vintage Japanese akoya saltwater cultured pearl brushed leaf cluster brooch.

The pearls are 7.00-7.50mm round. They are highly lustrous with bright rosy pink overtones and moderate blemishes almost exclusively located on the back of the pearls.

It is made of solid sterling silver with a brushed texture on the leaf. It is stamped "STERLING". It measures  1 3/4 inch long. From Japan 1950's. 

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