Glow in the dark pebbles and gravel - Available in blue, green, and aqua in packs of 250g. Suitable to use outside in gardens as a decorative garden feature, to highlight plant pots or the edge of paths for example or to decorate vases in windows etc, the only limit is your imagination! Glow in the Dark Pebbles and Gravel Please note: You are currently browsing img large pepples 100150mm cobbles madingley mulch that is 980x650px in size. This image is listed in decorative garden pebbles uk category. Glow in the Dark Pebbles and Gravel, 980x650 in 158.02 KB.