This paper presents the results from two experiments in working on descriptions of form in immersive virtual environments (IVE). Recently, Virtual Environments (VE) are increasingly used as environments for design and research. Using VE to visualize ideas from the initial steps of design, the architect is challenged to deal with perception of space, solid and void, without translations to and from a two dimensional media. From this new ability, we might expect new forms of design interaction and expression. The goal of our studies was to identify how designers use and communicate early design ideas by using immersive three-dimensional (3D) VEs and how they describe 3D volumes using different media. We set up a series of experiments including navigation- and perception-tasks, designing in IVE, transcription of design, remote communication between design partners and controlled observations. We explored initial intentions of 3D-immersive design schemes, textual descriptions and collaborations within IVE. This paper describes the outcome of creation, interpretation and communication of architectural design, by using an Immersive Joint Design Studio, as well as the description and translation of a 3D cubic structure. We discuss frameworks and factors influencing how architectural students communicate their proposals in an immersive Virtual Environment Design Studio (VeDS) and how this approach of design studio enables to understand volumes and spatial relationships.