and with a round spring clasp and extension chain at the center back

Classic and feminine

Also check out Circles Bobble Chain Bracelet Silver

There is an oval-shaped spring clasp at the center back

made all in silver as well

Plain Hoop Earrings Sterling Silver Gold Color:Silver and with a round springThese are small, thin, plain hoop earrings that are made from 925 sterling silver. Durable, timeless, and a true classic, these are super versatile. Perfect for either adding small earring charms to, wearing as part of an earring stack or simply wearing on their own for a bit of extra polish. Available in three colors. 18K Gold plated, 18K Rose Gold plated, and Silver.