Lava Rock. 1 to 2 Inch - 10 Pounds. Natural Lava Pebbles Black/Gray Fallen For Outdoor Gas Fire Pits And For Decorative Landscaping Applications 1 To 2 Inch (Dm) Ne

Liked the look but not enough for small firebowl, had to place cheaper lava rock beneath them.

Nothing to dislike

I knew the rocks would be a little heavier than the lava rock that came with the fire pit, but they are so much more efficient at retaining heat that a couple of pounds is worth it. Now we're using less propane and enjoying the warmth of a "campfire".

Great quality and size is as expected. Just not black at all. Mostly gray which is unfortunate.

They were 3-3.5 inches. Not what I needed at all!