"Swiss Glacier Pebbles are a fantastic multi-use product, great for anyone looking for grey stones for use on alpines and rock gardens, beds and borders. Swiss Glacier Pebbles are a stunning premium pebble that can be used to add texture and definition in the garden. Swiss Glacier Pebbles can be combined with other textures, such as slate or chippings, to create a statement in the garden. Swiss Glacier Pebbles are available to order in Large Packs and Bulk Bags. We recommend a minimum depth of 35mm when calculating how many bags you’ll require. Please keep in mind that natural materials will vary in size and colour, with some being significantly different. The colour of Swiss Glacier Pebbles will vary when wet and dry. "