Mignone Halls of Gems and Minerals Now Open

The Allison and Roberto Mignone Halls of Gems and Minerals, which opened in June 2021, offer a brilliant showcase for one of the world’s most important collections of gems and minerals and an engaging guide to our dynamic planet.

Thoroughly redesigned and reinstalled, the 11,000-square-foot Halls feature more than 5,000 specimens from 95 countries.