Rocks Gold Colelction 9ct Yellow Gold Open Circle Stud Earrings With A Cubic Zirconia Pave Set Half Halo. As pretty as they are practical, these elegant studs feature an open circle fringed with reflective cubic zirconias. Looking for an easy way to elevate your look? Pop these studs on for something ‘extra’. This piece is crafted from polished 9ct yellow gold. Earring Size: 7mm x 7mm Hallmarked in the Assay Office at Dublin Castle