Milestones Mosaic Stepping Stone Kits make it easy to capture a memory in stone. The DIY kits include everything you need, and the process is so simple. Just mix, pour, and then decorate your stepping stone with real stained glass mosaic pieces, pretty pebbles, stamps, writing, and more. Conforms to ASTM-D4236. Packaging may vary. - Milestones Mosaic Stepping Stone Kit - OwlMilestones Mosaic, OWL KIT - This stone can be completed in about 30 minutes and makes a great garden addition. This kit includes a 3.5 lb bag of stepping stone mix, an 8" reusable plastic owl mold, 6 oz of earth-toned mosaic glass,* four glass gems,* a wooden mixing paddle, a writing tool, and instructions.