This is an exceptional quality retro cultured saltwater akoya pearl heart pin.

The the pearls are highly lustrous with rosy overtones. They are graduated and measure 3.25-4.50mm. 

Measures one inch across. It is fairly petite. Not stamped but tested and guaranteed solid 14K yellow gold. Retro 1960's-1980's. 

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