Because we're always looking out for new types of rocks we have by chance stumbled across a new one never seen before called Island Rock.
This rather tasty looking rock comes in a variety of different sizes and is on the lighter side of grey. It's not white by any standards but certainly a very lightish colour and at first glance looks a picture. It has small grooves that have been carved out over the years that add character and style. This rock stacks well too which is a bonus so even though there aren't any HUGE pieces, by stacking them up you can give the appearance that they are large. For added security use some Aquarium Putty and this will make sure none will topple over.