Synthetic decorative stones really
There are many accessories that are designed for exterior decoration, the freedom of designers to decorate gardens is probably higher than inside the home, being completely open and natural spaces in which it is easier to draw and create.
In the picture we see an example of environment that corresponds to the collection Livingstone of Smaring "living stones", the name is pretty representative of the essence of the product, they are stones, smooth and rounded shape that adopt the most diverse sizes and shapes can be used as seats and tables as well as mere ancillary ornaments.
In this case, to imitate stone, for they are original pieces, are easy to integrate into the whole garden, as they ultimately represent a natural element that may well be part of it without forcing it, but what is interesting is that instead of having to find the stone that fits what we would like our garden is designed simply to measure.
Inspiration in natural elements to create an artificial adapting to the needs of man is a very common practice, occurs in living beings and inert, they change the size, color, texture, consistency .... but remains in its basic aspect, this would eliminate the negative properties, or against, we were just the pros.
In the case of the stones decreases the density to be less heavy, the softer touch and choose the shape and size in each case more interesting, this will get easier to move and transport, avoiding the danger that would pose a very strong and also gives them functionality as if it were furniture.