This is a delicate wispy vintage Japanese akoya saltwater cultured pearl leaf brooch or pendant.

The pearl is highly lustrous and measures 6.75mm, it has bright rosy pink overtones. 

It is made of solid sterling silver and is stamped "SILVER" for sterling silver. It measures 2 1/4 inches long. From Japan, 1950's-1980's. It has a pendant bail on the stem.

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