Permeable Paving Services include but not limited to graded, washed and kiln dried aggregates / pebbles our stocked items are 3mm to 6mm suitable for the permeable paving industry. We have a great range of colours it will suit just about all colour range in the landscaping industry. If we don't have the colour you need let us know send us a sample or a colour pallet and we will endeavor to get it in for you. All pebbles are washed in recycled rain water we don't use any chemicals in our washing process. The fish tank industry will ***** our pebbles as the washing process is chemical free. Our pebbles are prepacked in 20kg bags. All our pebbles are natural stone colours as nature made it, we don't use coloured pebbles.