Meteor Crater was created more than 50,000 years ago by a massive meteor strike near Winslow, Arizona. Visitors can experience the 550-foot-deep and nearly mile-wide cavity from an air-conditioned ...
which formed Meteor Crater in Arizona. The diamonds are sand-grain-sized, only hundredths of an inch across. Other crater-related diamonds are larger. In the 35-mile-wide Popigari crater in ...