Found rectangular, and

— Ecological purity of material. The installation process proceeds without unnecessary difficulties, which can not be said about the same brick, characterized by greater laboriousness in terms of efforts, as well as in time. Affordable cost of material, which is again below brick. As a rule, in form, such blocks are often found rectangular, and somewhat less often in the form of a parallelepiped. To reduce the time spent on installation, you can limit yourself to the fact that the blocks are sufficiently connected to each other, observing, of course, at the same time. These features make it possible to lay such blocks to the simplest person, without construction experience. It is also worth noting that gypsum blocks can be subjected to machines.