These pewter Tube Beads are a great form to create your own beaded patterns on. The embedding process is a quick and easy way to achieve the visual effect of a mosaic without the messy step of grouting. Instead, beads and stones are embedded in a black epoxy clay (Crystal Clay) which then cures in 16-24 hours. The epoxy clay has a working time of 1 1/2 hours. No baking is needed. The Tube Beads are made of lead-free pewter cast in the United States. They measure 7/8 x 1/2 each. Scott Long and Betsy Youngquist worked together in designing the Tube Beads specifically for embedding. Beads and Crystal Clay sold separately. Find the artist within and enjoy!!