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.

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).

Hello, We like these rocks a lot. They work well and are very attractive to look at each time we use our fire pit. Thank you,

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

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.

Very nice product as expected. Holds heat long after the fire is out. The size was perfect for our alcohols burning fire pit

Perfect for fire pit

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.