Long navette links, each one given a twist along its length, alternating between plain yellow gold and white gold cut with a fine cross-hatch. The links are hollow and barely 3mm wide, so she carries this much length without any weight and moves with the wrist.
The engraving is why she is here. That cross-hatched surface is a Florentine finish, cut with a graver in two passes at right angles, and it holds light in a soft shimmer where polished gold throws a hard shine. Seven inches on a lobster clasp, so she goes on one-handed.
*The links are hollow, which is what keeps a bracelet this wide so light. The ones nearest the clasp have taken a few small dents from wear, and you will see them up close. On a plain polished link we would have passed. Here the whole surface is already twisted and cut, so they sit in with the working of the gold.