SPACE stackable bookcase with single or double faced modules of various lengths and depths in 10mm thick tempered glass. The sides and the glass plates are in transparent extra light or acid-etched extra light glass. The base and the top are in lacquered or opaque satined glass. The back is in transparent extra light, acid-etched extra light, lacquered or opaque satined glass. Advertised in the picture is the extra-light crystal bookcase composed by three modules with two vertical elements and back, and two modules with one vertical element without back.