Sky Blue 100 Man-Made Glow in the Dark Pebbles Stone for Garden Walkway Hot Sell Material: Photoluminescent pigment + resin Package Include: A bag of 100 stones Color:Sky blue in the dark; Light blue in the daylight Delivery time: By Airmail: Generally, delivery to USA takes about 10-35 days. Delivery to Canada,AU, UK, and other European countries takes about 14-28 days.