Smith and other researchers from the Carnegie Institution, the University of Cape Town (South Africa) and the University of Padova (Italy) used a variety of analytical techniques to examine the mineral inclusions in 46 blue diamonds submitted to GIA for identification and grading over a two year period. This is scientifically important because it shows how elements, such as boron, from the surface of the Earth can be recycled deep into the mantle by plate tectonics. The authors of the study hypothesize that the boron which causes the diamonds’ blue color may have originated in ancient sea floors that were transported into the interior of the Earth. Mineral inclusions in the blue diamonds show that they formed in deeply-subducted oceanic plates. The study reveals that blue diamonds originate from depths reaching 410 miles (660 km) or more into the Earth’s lower mantle, where boron is scarce. “The opportunity to study these rare diamonds at GIA gave us insight to their incredible origin.”īlue diamonds, also known as type IIb diamonds, derive their color from minute quantities of boron. Evan Smith, the lead author of the Nature article. “Blue diamonds like the famous Hope diamond have intrigued scientists for decades, but the rarity and high value of these gems and their near lack of mineral inclusions have been major hurdles to research,” said GIA (Gemological Institute of America) research scientist Dr. Analyzing those inclusions demonstrated that the diamonds formed at great depth in the presence of sunken, or “subducted,” ancient oceanic tectonic plates. This was the first study to examine and identify the mineral inclusions in very rare and valuable blue diamonds. 1, 2018 – Blue diamonds, among the rarest of all colored diamonds, form at extreme depths – approximately four times deeper than most diamonds – and may get their color from a surprising source: the element boron, contained in the floors of ancient oceans carried deep into the Earth’s mantle by the movement of tectonic plates, according to new research featured on the cover of Nature, a distinguished international scientific journal. Courtesy of Smithsonian Institution.īoron from ancient ocean floor creates color in rare ‘superdeep’ diamonds The Hope diamond was graded in 1988 by a team of GIA gemologists. ![]() One of the most famous colored diamonds in the world is the Hope diamond, a natural color Fancy dark grayish blue diamond. If anyone in the forums developer/admin/support world has the ability to provide feedback to the development team, I'd love for them to get this feedback.Applied Jewelry Professional ™ Online Diploma eBay evolves their website so quickly, that there NEEDS to be a way for people like me, who are willing to put the effort into it, to mark forum threads as obsolete, when we find them. My head hurts, from banging it repeatedly against this brick wall.Īside: It's really frustrating that SO MUCH of the information in these forums is out of date, and just plain WRONG for the current environment. I've found oblique references to "chats," but not the supposedly useful information that would be found in those chats. Several people have even gone to the effort to post specific URLs that supposedly would send me to exactly the solution I need, except the solution is not on the page. There are plenty of questions and answers on this subject, none of which appear to work any more. ![]() I've been looking through the eBay seller community forums for questions and answers regarding this problem with Seller Hub in its current state (). It's important to me, to find and view the details for this item. ![]() Using Seller Hub, I accidentally deleted the wrong item from my listings, and I've forgotten which item it was.
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