My husband and I were in Suffolk last week, beachcombing as usual and found these three pieces, on Southwold beach I think. The first I'm hoping is copralite (fossilised poo!), the second are 2 strange very green stones which at first I thought were plastic, but they are definitely stones. The third is a real puzzle, it seems quite heavy, almost like metal, but is not attracted to a magnet. I can't make my mind up if it is natural or man made. There is possibly a crystaline structure and the shape, well I'm not sure what to think! There seems to be straight edges. At first I thought it was coal or jet but it's far too heavy for that. Opinions please!