Hematite is one of the most abundant minerals on Earth's surface and in the shallow crust. It is an iron oxide with a chemical composition of Fe2O3. It is a common rock-forming mineral found in sedimentary, metamorphic, and igneous rocks at locations throughout the world.
These earrings just make me feel "natural!" I bought the second pair because I loaned my first pair to a gal getting married in Hawaii and thought she should keep them and, she too, loved the gift!