Absolutely gorgeous! These stud earrings are made of 925 sterling silver with scrolling swirls on the rims around a large circular-cut crystalline gemstone. I am not sure what the gems are exactly; they may be crystal, they may be cubic zirconia. But they are extremely sparkly. The back of each earring has a 925 hallmark. The securing backings are not made of silver. There is some general oxidized tarnishing throughout, but can be polished. Each stone is secure, nothing is loose or chipped. Excellent used condition. The diameter of each earring is approximately 7/16” while the diameter of each gemstone measures 5/16”. The width measures 1/4” deep.