onlyfire only fire Black Lava Rock for Outdoor Pits, 10 Pounds Volcanic Lava Stones for Indoor places, Bowl, Gas Logs and Landscaping, 2.75-5 Inch

Well, they’re rocks. I combined them with two other bags of different sizes to fill in my fireplace under my electric logs. They look like black rocks, which was what I wanted. Oh, they do make a mess when installing them. Wear gloves and prepare to wipe the hearth after installation.

It's hard to find anything wrong with this product, it's literally lava rock. I used them in my propane firepit to help radiate more heat, and they've worked well for that! They also look nice, so that's a plus!

It was return because it wasn’t the right size for my grill.

I thought the price point was good, size works for out portable fireplace. It’s not a small one, I would say medium. They should last awhile, not too lightweight. Puts out plenty of heat when they warm up.

A lot of popping and some might hit you. Looks nice.