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 - GlowMilestones Mosaic, GLOW MOSAIC KIT - Light your way home. This kit includes a 3.5 lb bag of stepping stone mix, an 8" reusable plastic mold, 2 oz of glow-in-the-dark glass chunks,* design templates, a wooden mixing paddle, a writing utensil, and instructions.