MSI Piedra LPEBQBLK2POL40 .25"-.75" 40 lbs Polished Landscaping Pebbles Black feature a dark charcoal black tone, and all the character of natural beach pebbles. These fine polished quartzite pebbles suit a variety of landscaping projects. Use to create wandering paths, to keep weeds at bay around trees, and to accent landscape features including fountains and water features.