14k Solid Gold Round 3mm Cubic Zirconia Stud Earrings. A minimalistic detail on your ear that deserves clinic fashion eyes. 14k solid gold 4 prong casted stud earrings with the best quality 3.0mm Cubic Zirconia stone. Sold by the pair with 14k gold backing.14k Solid Gold. A 3.0mm clear cubic zirconia. Post Dimensions: 0.026" x 0.375" | 0.66mm x 9.5mm. 14k solid gold backings. Made in the United States.