My first thought when making this pendant was to use some of my saved gold filled wire hammered flat to create the pebble path. After I cut the wire into small bits, I hammered the pieces flat, and then looked at my expensive hammer. There were dents all over the face! Jewelers brass, the core metal in gold filled wire, is a very hard metal, so that was the most likely culprit. I had to spend over an hour sanding the face down smooth again. Note to self-Use an inexpensive hammer the next time I hammer gold wire again in this manner!
With that in mind, for the next pendant, I punched out little silver dots from scrap metal in these sizes instead: 2.38mm or 3/32", 3.18mm or 1/8", and 1.5mm. The 7 Holes Metal Punch Kit punches makes little points in the center of each disc, so gently hammer the disks flat on a bench block-any hammer will work on soft silver.