According to Wikipedia, a craton is an "...old and stable part of the continental lithosphere" -- the earth's outermost rocky shell.
Kimberlite pipes, where diamonds are commonly found, are sometimes rooted in cratons.
You can read more by following the link, below.
The part of a continent that is stable and forms the central mass of the continent; typically Precambrian.
Diamonds are found in diamond mines that circulate around volcanic pipes: mined diamonds.As well, diamonds are found under water where the water has washed over volcanic pipes that contain diamonds: alluvial diamonds.
Igneous rocks are the category of rocks that contain diamonds. The two types of igneous rocks that form diamonds are kimberlites and lamproites.
Diamonds are mined, so whatever effect mining may have on the earth is made when diamonds are mined.
The sequences of sedimentary rocks in cratons are typically thin and are relatively undeformed or gently warped. The sequences in mountain belts, meanwhile, are thick and extensively folded and faulted.
Cratons contain the ancient crust of igneous rocks.
In old areas of continental crust called "cratons" in volcanic structures called "kimberlite pipes".
The part of a continent that is stable and forms the central mass of the continent; typically Precambrian.
Nothing... diamonds are just one base: carbon.Another AnswerThere are diamonds that contain trace elements that can render colour in the stone. Most diamonds contain at least trace amounts of nitrogen, which gives diamonds a yellow cast: fancy yellow diamonds contain more nitrogen. Boron gives diamonds a blue, or blue-gray cast. And so on.Trace elements that give diamonds colour are not separable from the diamond lattice.
Diamonds are formed from carbon. Some brown diamonds may contain trace amounts of nickel -- otherwise diamonds do not contain metals.
No form of chocolate contains diamonds.
Jewelery can contain real diamonds, and jewelery can contain other gems, including stones meant to look like diamonds.
Since diamonds are most rare, indicator minerals are the only way to predict -- sometimes unsuccessfully -- where a miner might locate diamonds.The pipes are always required, since that's how diamonds are pushed up to the surface from earth's upper mantle, and kimberlite is not the only indicator mineral. (Link, below.)Diamond formation does not occur in the pipes: it occurs in cratons. From Wikipedia:"The correct combination of temperature and pressure is only found in the thick, ancient, and stable parts of continental plates where regions of lithosphere known as cratons exist. Long residence in the cratonic lithosphere allows diamond crystals to grow larger."You can read more about cratons, below.
Some minerals contain carbon, such as graphite and diamonds, however while they both contain carbon, the diamonds density is far greater.
Kimberlite can contain diamonds.
Both coal and diamonds are formed from carbon.
Diamonds are formed from carbon and contain no ores.