This is a lovely detailed vintage Japanese akoya saltwater cultured pearl spray brooch with hand engraving.

The pearls are 4.00-6.50mm round. They have high luster with very bright rosy pink overtones. 

It is made of solid sterling silver. The leaves have hand engraving and milgrain around the edges. It is stamped "STERLING" for solid sterling silver. It measures 2 inches long. From Japan 1930's-1950's. 

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