“This is a cabinet-sized specimen of celestine from the Yate Quarry, Yate, South Gloucestershire, England, United Kingdom. This specimen is in the Hillman Hall of Minerals and Gems at the Carnegie Museum of Natural History, Pittsburgh, Pennsylvania (CM11275). This specimen was in the former collection of William W. Jefferis. This specimen is in a case featuring minerals from “The Tin Isles” (England). Several of these specimens were in the collection of William W. Jefferis. Carnegie Museum of Natural History specimen and Jamison K. Brizendine photo References Cited: https://carnegiemnh.org/emu_widgets/mineralogy.html#details=ecatalogue.2013573 ”