Decorative aggregates are a fantastic way to add a low maintenance decorative feature to your garden. These multi purpose decorations can be anything from garden gravel and pebbles to stones and slate, and can be used to frame or emphasise certain areas and features of your garden. Decorative Aggregates | Garden Gravel, Slate & Cobbles | LSD Please note: You are currently browsing img decorative pebbles stones rocks natural white marble that is 800x800px in size. This image is listed in decorative garden pebbles uk category. Decorative Aggregates Garden Gravel, Slate Cobbles LSD, 800x800 in 155.74 KB.