Expressing transparency has various significances in modem society because modern people want transparent objects and space due to the complication, numerous unreasonable facts and the lack of honesty in the society. It is necessary to summarize the processes of changes in transparent materials that have been substantially emerging in the areas of indoor spaces and furniture since the 1960s by organizing the concepts such as the characteristics of materials, the processes of development and the methods of shaping centering on representative artists and works. And the concept of transparency in terms of space enabled the expansion, overlapping and connection of spaces. It can be said that these factors express the openness, purity and non-materiality of spaces. It can also be connected to the thought of minimal ism and this concept could be confirmed by analyzing the works of the famous designers leading the times.