Thanks to Shelley Stejer for sharing her 'heart rock' story with us on the Heart Rock Collective.
Found all these in about an hour without even looking, and about 8 more later. Every time I looked down, there were more. I keep wondering what this means. I found them the day we purchased and took ownership of a small piece of land on a lake. They were all found right at the entrance to the land in front of the gate :)