The discovery of davemaoite, the CaSiO3-perovskite, in a diamond from Earth’s lower mantle

George R. Rossman1, Oliver Tschauner2

1Division of Geological and Planetary Sciences, Califorina Institute of Technology

Department of Geoscience, University of Nevada, Las Vegas


The examination of inclusions in an 81 mg octahedral diamond from Orapa, Botswand has resulted in the discovery of the high-pressure form of CaSiOin the perovskite structure.

Orapa Diamond

A coated diamond from Orapa similar to the one in which davemaoite was disicovered.