For sale is this very pretty, 9k gold bracelet more commonly referred to as "gate link". It measures 3/8" wide and weighs 6 grams. It has a large thumb ring clasp and the heart lock is on a chain and can be interlocked to act as a safety chain. Excellent condition. The heart lock does open and close securely, and can be used as the clasp, but I've found in most cases, the gold thumb ring claps on this piece is easier to use.
Vintage 9k Gold Gate Link Bracelet With Heart Lock Charm