Received a call to look for a ring in the back yard. Person had purchased a metal detector but was unable to locate the ring. I got there and most of the back yard had pavers, so I knew it couldn’t be there. I searched all the grass in his yard, nothing! I was informed that he heard it hit something. The neighbors garage was also close, so I checked the neighbors yard. No Luck. I had previously asked him to check the roof of his garage, so I knew it wasn’t there. I went back to the yard and very carefully LOOKED at the crevice between the sidewalk and the grass. BINGO! As a note, I have had several other hunts where the ring was in a crevice next to a sidewalk and always as a last spot to concentrate on is that space.