9ct yellow gold decorated with red and black enamel stud earrings. This pack contains 1 pair of earrings. Specifications Length and Width: 5mm   Weight: 0.2g the pair Earring Type: Studs with butterfly fasteners Materials: 9ct Gold and Enamels Hallmarked: No Assay Office Marks Other Marks: 375 Nb. This is not a hallmark! All measurements are approximate.