A new study conducted by researchers from Curtin University in Australia has identified a third necessary ingredient for the formation of pink diamonds on Earth’s surface. The study focused on diamond-rich rocks from the Argyle volcanoes in Western Australia, using laser beams to analyze their composition.

The findings suggest that, in addition to carbon and the forces generated by tectonic plate collisions, the presence of pink diamonds requires the existence of continents that were stretched during continental separation hundreds of millions of years ago.

This discovery could have significant implications for the global search for new pink diamond deposits. Lead researcher Dr. Hugo Olierook explained that when land masses stretch, gaps are created in the Earth’s crust, allowing diamond-bearing magma to rise to the surface. The Argyle region, where the study was conducted, formed as a result of the breakup of an ancient supercontinent.

Dr. Olierook also explained that the collision of land masses creates a damaged or “scarred” area that will never fully heal, and it is within these damaged regions where pink diamonds can be found. He mentioned that as long as there is deep carbon, continental collision, and stretching, it could be possible to discover new sources of pink diamonds.

Despite this exciting discovery, finding new deposits of pink diamonds will not be without challenges. Most diamond deposits have historically been found in the center of ancient continents, where hosting volcanoes are exposed on the surface. The Argyle region, on the other hand, is located on the suture of two ancient continents, which are often covered with sand and soil. This means that there is a possibility of undiscovered pink diamond-bearing volcanoes, even within Australia.

The research, which has been published in the journal Nature Communications, not only sheds light on the geological processes behind the formation of pink diamonds but also provides valuable information for the diamond industry. Pink diamonds are rare and highly coveted gems, and the Argyle volcano has produced over 90% of the world’s supply. Understanding the necessary conditions for their formation can guide future exploration efforts and potentially lead to the discovery of new sources of these precious stones.

– “World’s largest source of pink diamonds found” – Nature Communications