that's where the creative bit comes in - there used to be an incredible jeweller in Ambleside called Sid Beddall who made a piece for my father to give to my mother. They had been out walking on the Old Man Coniston and found an interesting piece of iron -yrites, aka fool's gold. Sid shaped tree roots in gold around it to make it look like the rock had been locked in by the roots, a real one-off piece.....