MILESTONES-Kids Mosaic Stone Kit. This is a lasting and fun project for kids of all ages. Kit contains 6oz bright stained glass and 1oz glass gems four pattern design sheets wood mixing paddle craft stick for writing 8in reusable vinyl mold 3.5lb stone craft mix and easy to follow instructions. Create everyday or seasonal patterns. . WARNING: This product can expose you to Silica Crystalline (airborne particles of respirable size) which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov