The emphasis of the 23,000-specimen minerals collection is directed largely toward exhibition and education. Approximately one third of all known mineral species are represented and a number of the specimens are considered among the finest examples in existence. Recent acquisitions include an outstanding suite of minerals from the former Soviet Union and an historically important suite of Pennsylvania minerals formerly owned by the Academy of Natural Sciences in Philadelphia. The section houses a nice gem collection of about 2,300 pieces and a modest collection of meteorites.