The National Building Stone Database (NBSDB) is a central repository for information about the stones used in American buildings and monuments. The database currently contains 167 specimens of 122 building stones.

The NBSDB is a work in progress. We're continually working to expand our catalog of stones and improve the functionality of the web site. We've tried hard to ensure that the information presented here is accurate and complete, so if you find errors or have ideas about how we can improve the database, please let us know.