“20MM RIVER GRAVEL” has been added to your basket. View basket 20mm Moonstone£96.30 20mm Moonstone quantity Add to basket Category: Decorative Aggregates Description Description £96.30 per bulk bag Another hard flint with a variety of well-balanced colours. Related products Add to basket TRENT QUARTZ 20MM £69.00 Add to basket Graphite Grey Slate £96.30 Add to basket Black Ice £181.20 Add to basket 20MM NIDD GREY £88.80