Shetkastone: recycled paper (made in MN) http://www.shetkastone.com/ Enviroglass: recycled glass (made in TX) http://www.enviroglasproducts.com/ Paperstone: paper composite (made in WA) http://kliptech.com/paperstone.htm Kirei: sorghum http://www.kireiusa.com/main.php (made in CA)