This podcast episode introduces the hosts, Aaron Celestian, the curator, and Kriss Leftwich, the collections manager, of the Natural History Museum of Los Angeles County’s mineral sciences department. They discuss their current research into unusual growths on saber-toothed cat fossils and then explore various properties of minerals, such as color, luster, hardness, and reactivity, explaining how these properties are used for identification, analysis, and applications in fields like art and archaeology. The episode also features a discussion of the unique properties of minerals and rocks and how humans take advantage of them. Finally, they preview future episodes focused on laboratory tools and a deeper exploration of mineral colors.