1) Archaeological museum 2) Type of museum 
A lapidarium is a place where stone (latin: lapis) monuments and fragments of archaeological interest are exhibited - stone epigraphs, statues, architectural details like columns, cornices and acroterions, as well as tombstones and sarcophagi. ...
(from Latin lapis - stone) – a very wide-spread book in the later Middle Ages on the physical and symbolic properties of stones, gems and minerals.