What is the first step in diamond exploration?

The first step in diamond exploration involves looking for the oldest parts of the Earth's crust. This process is critical because diamonds are typically found in kimberlite pipes, which are often located in ancient geological formations. These formations are believed to be the result of significant geological events that occurred millions of years ago, which have led to the creation of conditions necessary for diamond formation.

By focusing on the oldest parts of the Earth's crust, geologists can more effectively identify regions that are likely to contain kimberlite pipes. Once these areas are identified, subsequent exploration activities, such as collecting soil samples or conducting gravity surveys, can be undertaken to narrow down potential sites for diamond extraction. Understanding the geological history and the ancient formations allows prospectors to strategically hone in on places where diamonds are most likely to be found.

In contrast, drilling core samples typically follows initial exploratory efforts rather than initiating them, while gravity surveys and soil sampling are additional methods used after potential areas have been identified.