14k Solid Gold Round 6mm Cubic Zirconia Stud Earrings. Unisex 14k solid gold 4 prongs cast stud earrings with the best quality 6.0mm Cubic Zirconia stone. It looks like a diamond. Sold by the pair with 14k gold backing. 14k Solid Gold. 7A 6.0mm clear cubic zirconia. Post Dimensions: 0.026" x 0.375" | 0.66mm x 9.5mm. Made in United States.