Ever wondered how those massive, eye-watering diamonds—the kind you see in movies or royal crowns—actually get made? Well, science just dropped a major update! 🌍
A team led by the University of Cape Town (UCT), in collab with the China University of Geosciences in Beijing and the Carnegie Institution for Science, has finally cracked the code on some of the most mysterious gems on the planet: CLIPPIRs.
Now, "CLIPPIR" is a bit of a mouthful (it stands for Cullinan-like, large, inclusion-poor, pure, irregular, resorbed diamonds), but basically, these are the elite, giant, super-pure diamonds that usually leave geologists scratching their heads. 🤯
According to the study published last month in Nature Communications, these gems aren't just random. They were born in unusual, iron-rich zones more than 150 kilometers beneath the Earth's surface. Imagine that—the pressure and heat at the base of the lithosphere are just wild!
Here is the cool part: the research shows these iron-rich spots were created from ancient oceanic crust that got dragged down into the deep mantle through a process called subduction. It is basically Earth's own recycling system, turning old sea floors into high-end jewelry. 🌊➡️💎
Associate Professor Geoffrey Howarth, the lead author, explains that the interaction between rising melts and these iron-rich regions is what creates those massive crystals. By reading the "chemical fingerprints" in minerals like olivine, scientists can now trace exactly where these gems come from—which means we might get better at finding them! 🕵️♂️
To put this in perspective, look at the legendary Cullinan Diamond. Found in 1905, it weighed a staggering 3,106 carats. Now we have a much better idea of the deep-Earth magic that made it possible. ✨
Reference(s):
Study uncovers deep-Earth origins of world's largest diamonds
cgtn.com
