La Brea Tar Pits will be closed on Friday, July 4 in observance of Independence Day. We will reopen on Saturday, July 5.

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