Bring the magnificence of volcanic rock to your home oasis with American fire glass small, Black lava rocks. Sourced in the USA & naturally occurring, these fire rocks are formed as volcanic magma rises to the surface, cools & releases gases which give the rocks their coarse, porous surface. & because they are volcanic, they can withstand the most extreme temperatures without sustaining any damage or crumbling, making them a cost-effective, long-lasting & beautiful addition to your fire pit, Fire bowl & indoor or outdoor fireplace. Small lava rocks may be used exclusively in a fireplace or fire pit, or as a base or filler for other ornaments like fire glass, light stones or fire beads. For deep set fire pit projects, fire rocks are a must-have because they are lighter weight by mass & also economical as the base filler to camouflage gas piping & tubes. American fire glass lava rocks are also great in soil to retain moisture for plants & work well as an addition to aquariums & ponds. American fire glass 1/4” – 1/2” thick, small, Black lava rocks are a low maintenance, durable & unique natural material that look great as part of your indoor or outdoor decor. You can actually see the difference in how the fire burns – fire pit rocks have a fascinating burning effect worthy of a status Update! Make sure you have plenty of food & drink on hand Because friends & family won’t want to leave once they come over. The exotic, classy look of the lava rocks adds a warm, tropical & rustic elegance to your fire feature, no matter where your home paradise is located.