Adams in a gym that aren't part of its essential chemical composition are called: {Ans: Trace elements The chemical composition of a diamond is carbon. When other elements are incorporated into diamonds, crystal lattice, they are called impurity elements, or trace elements.}A horizontal tunnel drill through a diamond pipe is called a: {Ans: Drift Horizontal, tunnels, called drifts, are drilled into the diamond pipe to extract the ore}The large stable parts of the earths continental crust are called: {Ans: Cratons make up the inner portions of the continents, where they have existed without change for millions of years}Removal of mineral, bearing ore from a surface excavation is called: {Ans: Open pit mining In most open pit, Mine, removal of overburden, and ore results in an ever deepening pit with terrace sides that provide a roadway for rock bearing trucks}The group that united in 1890 to buy and sell the output of major Diamond producers, including debeers, was the: {Ans: London diamond syndicate A group of prominent diamond merchants formed the London diamond syndicate, and contracted to buy all the output of the major diamond producers, including de beers}The difference between the RI values of specific