Amazon.com: Regal Findings 2 pcs. Pack Solid Sterling Silver .925 Leverback Fleur-De-Lis Shell Earring Ear Hooks Wires Findings with Open Loop for Jewelry Making. Approximately 10 x 15 mm (3/8" x 9/16") :
Ear wire, silver-plated brass, 18mm leverback with 8x4mm shell and open loop. Sold per of 250 pairs. - Fire Mountain Gems and Beads
14K White Gold Fleur de Lis Lever Back Ear Wire with Open Ring New – Ritastephens