How to Make Diamonds in the Rough
Sea water may be a critical component in the formation of some diamonds
Along with gem-quality diamonds come cloudy, greenish stones, which contain inclusions of fluid trapped in the stones when they formed 200km beneath the surface. Dr. Pearson has identified the fluid as containing salts and other elements derived from seawater.
They suspect this material was cycled into the deep earth by tectonic activity, where the seawater became part of the raw material from which the diamonds crystallized.