These are a quality pair of vintage 18K solid yellow gold and Japanese saltwater akoya cultured pearl stud earrings. 

The pearls are petite and measure 5.00mm and are lustrous with rosy pink overtones. 

They are set into solid 18K yellow gold with butterfly backs. They are stamped "K18" for solid gold. From mid-century.

All pearls are truly vintage and only been lightly cleaned.