pebbler

noun3

1. •
   One who collects pebbles.

   • This bay has long been the favourite resort of pebblers. The whole coast indeed, more particularly to the south, is strewed with onyxes, moss-agates, and cornelians. — 1815
2. •
   One who or that which applies a pebbled surface to something.
3. •
   One who or that which places pebbles at the vertex of a graph, according to certain rules; see pebble game.