Lance Grande

Lance Grande has been doing fieldwork in the Fossil Butte Member of southwestern Wyoming for more than thirty years. He is senior vice president and head of research and collections at the Field Museum of Natural History, Chicago and has also been curator in the Geology Department there since 1983. He is the award-winning author of more than one hundred books and articles, including Gems and Gemstones: Timeless Natural Beauty of the Mineral World, also published by the University of Chicago Press.