This is smooth and detailed with lots of color depth. It looks like a tileset I would imagine coming from a modern mobile puzzle game in that is clean and easy on the eyes. I find this to be underrated, overlooked.
It is fairly abstract, but it could still find a variety of contexts. The default looks like a mysterious desert cave or ruin, but deep-contrasting, marble-like black-and-white stone with the background palette changed to simulate space or a dark void might make for a cool interdimensional set. A red background tint with warmer highlighting on the foreground stone could simulate a super fiery volcano.
If it doesn't seem like there is enough here to carry your level, this set would definitely make an excellent supplement to a setting you would like to place a castle or ruin in.