Garden stepping stones - help finding

[sangel0]

Few years ago DH bought me a set of 4 slate stepping stones with dragonflies engraved on them. They aren't very heavy and they came from linens and things of all places. I have been having the hardest time finding similar ones. Lowe's have the heavy patio and Michael's has mosaic ones you can make yourself but they aren't really what I am looking for. Has anyone seen any around?