LZHAMZ Glow in The Dark Garden Pebble Stones | for Patio DecorationLZHAMZ Glow in The Dark Garden Pebble Stones for Patio Decoration Absolutely safe: Made of high quality resin, non toxic, tasteless and non radioactive. Work fine and polished to have no sharp edges. Environmentally friendly and: no electricity required! Glowing pebbles absorb and store energy from sunlight or other light sources and illuminate in dark environments. Package includes: 800 pcs blue glow pebble, Diameter: 0. 8" 1. 2" 2 3cm. The perfect