This is a stunning high quality Japanese saltwater akoya cultured pearl cluster pendant. 

The pears are 4.50-5.50mm and highly lustrous with bright rosy overtones.

It is made of solid 18K yellow gold and features a modern cluster design. It measures 1 1/8 inch total. It is stamped "K18" on the bail. From Japan 1950's-1960's.

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