Jennifer Dahl Designs LLC- The Secret Garden Vintage Book Cover Charm Necklace. Created from the original book cover, our two-sided soldered charms are hand soldered in our Minnesota studio, so little variations are not only accepted, but expected and add to the charm of the piece. Materials: recycled glass, paper, lead free + jewelry grade solder. Dimensions: Soldered charm 1" x 1.5". Complete Necklace option includes a 30" ball chain with ball chain connector and a freshwater pearl.