The Hart museum will remain closed until further notice. The County approved a motion to begin negotiations to transfer ownership of William S. Hart Park and Museum to the City of Santa Clarita. Learn more.

A Rare Journey: The Jonker Diamond

Mineral Sciences Curator Aaron Celestian talks about the spectacular rare gem featured in the current NHM exhibition, 100 Carats: Icons of the Gem World.

Rectangular-shaped clear gem with purple and green swirls behind it on a black background