Glowing Artificial Terrazzo Rubble Garden Path Flowerpot DecorThe noctilucent stones will be glowed after sun exposure those stones can be recycled for any place Suitable for decorating garden path swimming pool fish tank or etc You can make these stones any shape as you like Specification Material terrazzoWeight 1000g 2 20lbSize 1 3mm 3 5mm 5 8mm 8 15mm 15 20mm random Color yellow green blue green sky blue blue greenFeature Can be absorbed any kind of lightIt could be used over and over again Glow lasts approximately two to three hours after full sun exposureHigh brightness long life time expectancyEnvironmental friendly material no radiation non toxiPebble style perfect for decorationNOTE 1 Please place the stones under the sun to receive sunlight for more than 3 days 2 After being exposed to strong daylight with 3 hours these pebbles can be lighted within 1 2 hours in the dark 3 Yellow green blue green and sky blue are white in the daytime and will glow yellow green blue green ans sky blue in the dark Package Included 1 X Pack of Glowing Stones 1000g