Midwest Hearth Natural Tumbled Lava Stones for Gas Fire Pit and Fireplace | Extra Large (3"–5") | Smooth Round Volcanic Rock | 10 Lbs

I didn't want to spend the money for these lava rocks. You can get your typical red jagged lava rock pretty cheap, but I generally don't find this color, size, or shape locally. So I went ahead and spent the money, and happy I did. These rocks look fantastic in the fish tank, especially against a light sand substrate. Added bonus is that the pours promote the growth of beneficial bacteria. They do come out of the bag extremely dusty and look much lighter. I gave them a quick rinse in tap water and put them right in the tank.

It was exactly what I needed for my stove

We wanted a natural look for our modern style fireplace, and these stones fit the bill. They are the size we wanted and the color is nice too. We did a layer of black fire glass first then set these on the perimeter of the flames, as suggested by our local fireplace dealer (yeah, that’s a thing).

Tumbled to a smooth surface. Constant color. Look good in the fire pit. A bit pricey but good quality.

Love these. Replaced our old stones with these an it immediately made our fireplace look more expensive and modern

Product is as said in color, size etc

Not sure if they are good for fire pits—but didn’t buy them for that reason. I got them for a Opae Ula shrimp tank. Boiled them a few times and stuck them in my aquarium. No issues. They look amazing! My shrimps are happy.

They look fantastic, but after 10 minutes of direct flame a rock exploded and a 1" chunk hit me in the chin about 10 feet away. Thankfully it wasn't my eye and nobody was hurt! Edit: After 40 additional minutes they seem stable and no more have exploded. Thermal camera reads the temp at 1,032 degrees. Just bake them a while before you actually decide to be anywhere near them.

Amazing