They secure by post with friction backs.
3 ct Peridot Oval Three Stone Dangling Stud Earrings in Sterling Silver 2 5/8 ct Peridot Peridot Sterling Silver Oval August Birthstones Earring Style: Stud Metal Stamp: 925 Sterling Plating (Diamonds): Sterling Silver Earring Stone Treatment (Genuine and Lab-Created Gemstones): Genuine Earring Total Number of Stones (Genuine and Lab-Created Gemstones): 6 Dimensions: 0..