Hisredsun 2.3-1cm Black Decorative Stones for Plant Pots, Small River Stones for Landscaping, Vase Filler, Succulents and Garden Decoration. NATURAL STONE: Natural river stone with slightly polished surface and no sharp edges on the surface. Includes: 1.8kg of gravel 0.7-1.5cm gravel is safe for use in aquariums, helps soil retain moisture, ensures good drainage and is rounded and soft and friendly to the feet, as there are no sharp edges. OUTDOOR DECORATION - Add a beautiful touch to your outdoor space: sidewalks, walkways, water features, ponds, water gardens, exposed aggregate floors or walls and around pools. Crafts: aquariums, rock gardens, succulents, cactus pots, fish tanks, bamboo, bonsai. Ideal for home decor projects: floral arrangements, centerpieces, vases, bowls, pharmacist jars, wedding buffets, display jars, Hurricane glass pillar candles.