Our floral blocks are hand-crafted with preserved flowers and resin. Thickness varies from 1-3 inches thick, depending on the flowers and molds. All our Floral Blocks go through our Flower Beautification Process to make them look as close as possible to the way they did when they were fresh. All epoxy will yellow; however, our casting resins have UV inhibitors in them that will delay the change in color. We recommend not to display them in direct sunlight. Refer to our FAQ for more information.