TOPZEA 12 LB Black Lava Rocks Sand for Plants, Potting Soil Decorative Landscaping Gritty Pumice, Crushed Volcanic Stone Gravel for Bonsai Succulent. The black volcanic rocks are very versatile and widely used for landscape decor, DIY craft projects, fish tank, terrarium, bonsai potting, fairy gardening, sensory bin, as vase filler, fire pits bowl, gas Logs, fireplaces, BBQ grills, etc.
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