The collection consists of samples from a wide spectrum of stones, namely limestone, marble and semi-precious stones (gemstones), as well as minerals that have been widely used in ancient Greek architecture, sculpture and the minor arts.  The collection has been organized in such a fashion as to enable both students and visitors to familiarize themselves with the various raw materials used in ancient technology. Identifying the raw material from which an ancient artifact / work of art or architectural item has been constructed is of paramount importance to archaeological research. Knowledge of the distinctive characteristics and properties of the raw materials behind a monument contributes significantly to the greater understanding of its form and intended use/or function