Create pretty centerpieces or floral arrangements in an instant! Simply add one pack of these 2mm purple hydrating beads to a bowl or vase, add 1 liter water then watch them expand to 16 oz. of beautiful vase fillers in 6-8 hours. Add fresh or faux flowers to these purple marble pearl beads for a one-of-a-kind party centerpiece. You’ll love the unique look they give your wedding decorations or anniversary bouquets. Plastic. Looking for another color? Find our entire selection of water beads and water ice sold separately online!