r/whatsthisrock

: "What is this? Found on a wild beach in Jamaica."

: "Found this while digging my mothers grave."

: "My family got this from the porch of a foreclosed house in Missouri we were cleaning. It is huge and very heavy. Any idea what it could be?"

: "I left a science project outside for too long and came back to this. What kind of crystals did I accidentally make??"

: "Found on the beach. Fossils?"

: "Found near saddle mountain in washington state"

: "What’s this giant rock we found in our barn"

: "Found a nice stone"

: "Had this pebble for a while and no idea what it is. Found on a beach in Denmark."

: "Found in my backyard in Alabama. Very smooth, pyramidal shaped stone with a round bottom. The unsmoothed sides have holes and pockmarks that almost look like pumice or volcanic rock but it’s very smooth. What have we found?"

: "Does anybody recognize what this could be?"

: "I thought gneiss, but friend suggested petrified wood. Found in Lake Superior."