9ct Yellow Gold 9mm Ball Stud Earrings. 10-01-231. Classic and elegant, these solid 9ct yellow gold stud earrings are a staple for the jewellery box. Completed with post and butterfly fittings. All our yellow gold jewellery is designed and crafted within our very own workshops in Ashbourne, Derbyshire where a team of skilled craftsmen transform the natural materials into these stunning pieces of jewellery. You can find other matching yellow gold jewellery on our website. All are lovingly and securely dispatched with our elegant jewellery packaging.