Remount Landscape Supplies Offers a 25mm Semi Smooth round White Calder Pebbles with flecks of grey. 25mm Calder is a warm white Semi Smooth Pebble and one of our most popular product lines. It is a great option for contemporary landscape and building construction features while still lending itself suitable to heritage landscaping installations for pedestrian, vehicular pathways, around pools, ponds, water features and as an in-organic mulch in pots and planter boxes. Call us today for you no obligation free quotation we deliver statewide!