I have an outdoor firepit that I purchased from another vendor, it came with lava rock (not enough of it) which I thought detracted from the looks. I had seen fireglass and knew that is what I wanted. Love, love, love this fireglass. I mixed it with some marble styled glass in another shade of blue and I have received so many compliments. My only concern was I not exactly sure how much to purchase. The glass pieces are small and irregular in size.