This varies greatly, depending upon the complexity of the weave, how many jump rings are used the size and metal of the rings, and other similar factors.
A very simple pair of earrings from one of Rebeca's regular jewelry lines could take her less than 10 minutes to make. Complex pieces can take her more than 100 hours. Creating new pieces takes additional time beyond simply linking the rings together, as the design process (including troubleshooting sizes) can be time-consuming.
New weavers typically need three to ten times as long as veteran weavers to create pieces.