The center is a  flat gold piece but looks dark in some of the pictures.  The first picture shows it best.  This Vintage 10k Yellow Gold Newborn Baby Ring is a unique and charming piece of jewelry perfect for celebrating a baby's birthday. The round yellow gold band is decorated with intricate details as shown, making it a special and meaningful gift for a new addition to the family.  This original baby ring exudes a timeless and elegant style that is sure to be cherished for years to come.

It is vintage and marked 0  10K on the inside.