It is obvious now that the Cullinan mine is the most important source for natural blue diamonds of the highest quality. Photo by Evan M. Smith. So, they’re not as rare as red ones or violet. This flawless stone cost $9.49M at an auction, which means the buyer paid the highest rate/carat ever recorded. This one was first known as the ‘Perfect Blue’ before it was purchased by Harry Winston in 2014. They’re still novelties to own, partly because yearly so few of them are added to the diamond market: usually only 2 to 4 in a given year. The, – They fall into the group of second-most scarce of all diamonds. – after it was cut and polished it was recorded as 31.06ct. CLICK HERE TO GET THE FOX NEWS APP. This is an extended abstract of the article ‘Blue boron-bearing diamonds from Earth’s lower mantle,’ published in the journal Nature. Remarkably, the boron atoms contained in these blue gems may … For more information on the program and to register, visit symposium.GIA.edu. Large-scale diamond mines are found in the country of Brazil. Its hue is grey-blue and it has an interesting backstory: people believe it has a curse. In most colored stones, hues are the result of impurities inside. Types refer to a diamond’s grading and you’ll come across: Another stone comparison experts make is to see how well gems handle heat & electricity conduction. An African company recovers a rare blue diamond, thought to be worth $10m (£6.5m), from its mine in South Africa. An alternative way of explaining the rarity is this: Eden Rachminov’s book “The Fancy Color Diamond Book” states that 0.1% of all diamonds that have the classification of ‘fancy colored’ get the ‘Type IIb Blue’ diamond label. This new study reveals not only that type IIb diamonds are among the deepest diamonds ever found, but also that boron and maybe even water can be carried from the ocean deep into the mantle by the process of subduction. Cullinan mine is one of the world's most important sources of blue diamonds, according to the company. Figure 2: Rough blue diamonds weighing between 0.7 and 3 carats each. Blue diamonds are among the rarest of gems. All rights reserved. Cullinan mine is one of the world’s most important sources of blue diamonds, according to the company. The blue diamonds – They fall into the group of second-most scarce of all diamonds. The last significant discovery was a 20.08 carat blue gem found at the site in September 2019, which sold for $14.9 million to an anonymous buyer. Diamonds are very rare and valuable minerals, found in caverns and chests, used to craft tools, armor, enchantment tables, jukeboxes, and Diamond Blocks. In 2018, Gem Diamonds found a 910-carat diamond known as the "Lesotho Legend" at the Letseng mine that eventually sold for $40 million. at auctions & these events keep seeing record prices paid for blue stones. On Sept. 30, Gem Diamonds’ Letšeng mine discovered not only the 12 ct. blue, but an 83.9 ct. white described as “exceptional quality.” The mine’s statement did not comment on the blue stone’s quality. According to NCDIA, the latter is the only place you’ll find blue stones that fluoresce. The vivid blue of the gem is quite striking. According to NCDIA, the latter is the only place you’ll find blue stones that fluoresce. The blue diamond engagement ring, The blue diamond wedding ring, or if you have natural blue diamonds – they are rare to find and precious. Rare blue diamond found in South Africa sold for £17m. Blue Diamond (building) a skyscraper in Miami, United States Blue Diamond, Kentucky, an unincorporated community in the United States Blue Diamond, Nevada, a census-designated place in Clark County, Nevada, United States Blue Diamond (Iceland), a tourist route in Iceland Who knows what the earth will still deliver? 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