Decorative pebbles look stunning in water features or on garden paths, whilst cobbles can create a brilliant, authentic style walkway to a garden or path. We also have a range of Large Cobbles & Boulders which are perfect for those bigger landscaping projects when Pebbles and Rockery Stone just wonâ€™t do. Large boulders can make great features A selection of cobbles, decorative pebbles and boulders Please note: You are currently browsing img decorative garden stones ni garden ideas that is 700x416px in size. This image is listed in decorative garden stones belfast category. A selection of cobbles, decorative pebbles and boulders, 700x416 in 63.72 KB.