Simple and classic, our 10k yellow gold round hoops feature a snap-tight hinged post and a lightweight hollow tube design that measures approximately 3mm (1/8 inch) thick by 16mm (5/8 inch) in diameter. Polished 10k yellow gold hollow designApproximate size 3 x 16mm (5/8 inch)Hinged post with a snap down catchWeight is Approximately 0.93 grams