During my gardening work I have come across a multitude of snails, it seems every time I move a stone there is one stuck underneath, or a family of them. I've seen varied shell shapes, some colourful patterns, some tiny brown ones and others with yellow stripes. It has slowed me down as I check each time I move anything, to avoid crushing and squishing - I pluck them off and find a safe place to put them. I feel sorry about disturbing their chosen spot and hope they will survive the move.
I remembered a piece of stone in the workshop with swirly iron-ore marking, which I thought looked just like the snail shells. It was my hope that the banding would come perfectly in the coil of the shell, but I missed slightly, and it ended up on top!