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Keyword: diamonds

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  • Sold: the Pink Star diamond sells for $71.2 million, becoming the world's most expensive gemstone

    04/04/2017 8:26:00 AM PDT · by C19fan · 34 replies
    UK Telegraph ^ | April 4, 2017 | Sarah Royce-Greensill
    The Pink Star diamond has become the world's most expensive gemstone, selling at auction today for $71.2 million (£57.3 million) including buyer's premium. The 59.60-carat pink diamond is the largest Internally Flawless, Fancy Vivid pink diamond ever graded by the GIA, and sold for above its estimate of $60 million (£48.3 million) at Sotheby's in Hong Kong. It breaks the record previously held by the Oppenheimer Blue diamond, which sold for $57.5 million at Christie's in Geneva last May. It has also become the highest price item ever sold at auction in Asia.
  • Diamonds aren't a girl's best friend...

    03/28/2017 7:12:59 PM PDT · by Ol' Dan Tucker · 93 replies
    Dailymail.com ^ | 03-28-2017 | Hannah Parry
    A jewelry restorer has gone undercover at some of New York's most recognizable diamond stores to 'prove' that customers are being ripped off. Diamond expert Jacob Worth, founder of I Want What It's Worth, claims that luxury retailers Tiffany & Co, Cartier, Van Cleef and Harry Winston all use 'identical' diamonds to those found in basic retailers - but with huge markups. 'There really is nothing special about these diamonds. Identical rings can be found at Costco or websites like Blue Nile,' he said. 'At Tiffany you are basically paying a massive markup up for a blue box which you...
  • Diamond’s 2-billion-year growth charts tectonic shift in early Earth’s carbon cycle

    02/24/2017 6:09:37 PM PST · by JimSEA · 8 replies
    Science Daily ^ | 2/23/2017 | S. Timmerman
    A study of tiny mineral 'inclusions' within diamonds from Botswana has shown that diamond crystals can take billions of years to grow. One diamond was found to contain silicate material that formed 2.3 billion years ago in its interior and a 250 million-year-old garnet crystal towards its outer rim, the largest age range ever detected in a single specimen. Analysis of the inclusions also suggests that the way that carbon is exchanged and deposited between the atmosphere, biosphere, oceans and geosphere may have changed significantly over the past 2.5 billion years. 'Although a jeweller would consider diamonds with lots of...
  • Carbon-14 in diamonds: Refuting Talk.Origins

    11/15/2016 7:43:16 AM PST · by fishtank · 5 replies
    Carbon-14 in diamonds: Refuting Talk.Origins Published: 12 November 2016 (GMT+10) C S from United States wrote in: ""I was looking at talk origins’ little archive on Diamonds and C14 in summary. They say Radioisotope evidence presents significant problems for the young earth position. Baumgardner and the RATE team are to be commended for tackling the subject, but their “intrinsic radiocarbon” explanation does not work. The previously published radiocarbon AMS measurements can generally be explained by contamination, mostly due to sample chemistry. The RATE coal samples were probably contaminated in situ. RATE’s processed diamond samples were probably contaminated in the sample...
  • Lockheed Martin files patent for a synthetic diamond 3D printer

    08/19/2016 11:02:03 PM PDT · by 2ndDivisionVet · 28 replies
    3D Printing Industry ^ | August 19, 2016 | Katie Armstrong
    Lockheed Martin, the aerospace company, have filed a patent for a new kind of 3D printer. The patent, filed on April 4 by inventor David G. Findley, describes a new way of 3D printing which would use a pre-ceramic polymer and nanoparticle filler to create synthetic diamond objects of pretty much any shape you can dream up. “[The] method includes depositing alternating layers of a ceramic powder and a pre-ceramic polymer dissolved in a solvent. Each layer of the pre-ceramic polymer is deposited in a shape corresponding to a cross section of an object. The alternating layers of the ceramic...
  • 500 year-old shipwreck loaded with gold found in Namibian desert

    06/07/2016 3:47:41 PM PDT · by Kaslin · 60 replies
    Fox News.com ^ | June 7, 2016 | Walt Bonner
    Diamond miners recently discovered a ship that went down 500 years ago after draining a man-made lagoon on Namibia’s coast. While shipwrecks are often found along Africa’s Skeleton Coast, this one just so happened to be loaded with $13,000,000 worth of gold coins. It also answers a centuries–old mystery and is what some archaeologists are calling one of the most significant shipwrecks ever found. The wreck was first discovered along the coast near Oranjemund by geologists from the mining company De Beers in April 2008. One reason it took centuries to find is because it was underneath the ocean floor....
  • Forget Kohinoor, a Diamond Four Times Bigger Is Now in Dubai

    05/10/2016 12:36:52 AM PDT · by nickcarraway · 16 replies
    Emirates 24/7 ^ | Tuesday, May 10, 2016 | Vicky Kapur
    Uncut diamond weighs in at 404 carats compared with Kohinoor’s 105.602 caratsEven as the governments of India, Pakistan and even Afghanistan have all laid a claim on the world-famous Kohinoor diamond that is set in the front of UK’s Queen Mother’s Crown, it is Dubai that can be called home to one of the world’s rarest and largest rough diamonds even discovered. The astonishing rough diamond in Dubai is characterised not only by its sheer size – an impressive 404 carats – but also uniquely by its colourlessness and flawless clarity. The cut-down Kohinoor, on the other hand, weighs 105.6...
  • The Ministry of Finance will hold a crisis sell diamonds (Russia)

    02/15/2016 3:12:45 PM PST · by dynachrome · 17 replies
    Izvestia ^ | 2-15-16 | Sergey Fish
    The budget deficit, the Ministry of Finance will hold several auctions for the sale of diamonds from Gokhran - the total amount of 167.5 thousand carats.. For comparison: for the whole 2015 the Ministry of Finance sold 8.8 thousand carats.. For the first time will be sold only medium-sized stones - to 10.8 carats. Such diamonds on the market in abundance, experts say, and they are of special interest for the buyers do not represent, but oversupply may adversely affect the market and revenues in the budget hardly exceed $ 15 million (1.2 billion rubles). The Ministry of Finance in...
  • Was toppling Libya all about the money?

    05/19/2015 4:39:45 PM PDT · by Starman417 · 22 replies
    Flopping Aces ^ | 05-19-15 | DrJohn
    In 2011 Barack Obama led from behind a NATO coalition bent on removing Moammar Gaddafi from power in Libya. The removal and death of Gaddafi was, Obama put it, a warning to "iron fisted" rulers everywhere. Syria, Iran and North Korea excepted, of course. Over at Foreign Policy this was hailed as a huge success. "Leading from behind" is an important element of this doctrine. It is no insult to lead but let others feel they too are architects of a plan, to lead without making others feel you are bullying, to lead but do so in a way in...
  • US arrests man 'with uranium for Iran in shoes'

    08/24/2013 10:14:21 AM PDT · by NormsRevenge · 35 replies
    Yahoo! News ^ | 8/24/13 | AFP
    A man was arrested in New York City's international airport with uranium destined for Iran hidden in the soles of his shoes, the US Justice Department said. Patrick Campbell, 33, who was arrested Wednesday as he arrived at the John F Kennedy airport from Paris, is accused of trying to act as an intermediary to sell Iran 1,000 tons of purified uranium, in violation of US law. The Sierra Leone-based Campbell had been under surveillance since May 2012, when he responded to an ad on the site Alibaba.com by someone looking to buy uranium 308, or yellow cake. The buyer...
  • Earth May Have Created Its Own Water Deep Within; And There's Still Enough There To Fill The Pacific

    12/19/2014 7:32:52 PM PST · by BenLurkin · 46 replies
    hngn.com/ ^ | Dec 19, 2014 06:57 PM EST | Rebekah Marcarelli
    A team of researchers revealed evidence of an unknown geochemical pathway used by the Earth to sequester water deep within, releasing small amounts through plate tectonics in a process that feeds our oceans "from within," Ohio State University reported.
  • World's largest water reservoir found deep in earth

    06/13/2014 3:41:21 AM PDT · by rjbemsha · 32 replies
    Indo Asian News Service ^ | 13 June 2014 | Anon
    In what could quench the thirst of billions of people in the future, researchers have discovered our planet's largest water reservoir 640 km beneath our feet - bound up in rock deep in the earth's mantle. This water is not in a form familiar to us - it is not liquid, ice or vapour. This fourth form is water trapped inside the molecular structure of the minerals in the mantle rock. Scientists have been looking for this missing deep water for decades," explained geophysicist Steve Jacobsen from Northwestern University.
  • Earth may have underground 'ocean' three times that on surface

    06/13/2014 12:23:50 PM PDT · by Eurotwit · 71 replies
    The Guardian ^ | Friday 13 June 2014 04.53 BST | Melissa Davey
    Scientists say rock layer hundreds of miles down holds vast amount of water, opening up new theories on how planet formed After decades of searching scientists have discovered that a vast reservoir of water, enough to fill the Earth’s oceans three times over, may be trapped hundreds of miles beneath the surface, potentially transforming our understanding of how the planet was formed. The water is locked up in a mineral called ringwoodite about 660km (400 miles) beneath the crust of the Earth, researchers say. Geophysicist Steve Jacobsen from Northwestern University in the US co-authored the study published in the journal...
  • Rare Mineral Ringwoodite Included within Diamond Points to ‘Oceans’ beneath Earth

    06/16/2014 3:14:38 PM PDT · by WhiskeyX · 21 replies
    Sci-News.com ^ | Mar 14, 2014 | Sci-News.com
    First terrestrial discovery of an extremely rare mineral called ringwoodite confirms theory about huge water ‘reservoirs’ 410 to 660 km beneath the surface of our planet, says a team of researchers led by Prof Graham Pearson from the University of Alberta, Canada.
  • Scientists discover massive ocean of water 400 miles underground

    06/16/2014 1:51:37 PM PDT · by blueplum · 78 replies
    The Verge ^ | June 14, 2014 2:20am | Kwame Opam
    Researchers at Northwestern University have found evidence for a massive reservoir of water deep within the Earth's mantle. The reservoir, which is said to be three times the volume of the oceans on the surface, is contained within highly-pressurized rock known as ringwoodite. The scientists hope that their findings, recently published in the journal Science, can shed light on where Earth's oceans came from. THREE TIMES THE VOLUME OF THE OCEANS ON EARTH'S SURFACE The team, led by mineralogist Steven Jacobsen, used an array of 2000 seismometers to study how seismic waves generated by earthquakes move through the Earth's interior....
  • Diamonds Rained Down During Ice Age

    07/07/2008 2:05:25 PM PDT · by decimon · 42 replies · 439+ views
    Live Science ^ | JUL 7, 2008 | Ker Than
    Diamonds and precious metals found in the eastern United States might have rained down during the last Ice Age after a comet shattered over Canada and set North America ablaze, all leading to a mass die-off of animals and humans. New chemical analyses of diamond, gold and silver found in Ohio and Indiana reveal the minerals were transported there from Canada several thousand years ago. The question is, how?
  • German thieves tunnel their way through to diamond shop

    12/01/2014 4:57:52 AM PST · by WhiskeyX · 11 replies
    The Telegraph ^ | 5:04PM GMT 25 Nov 2014 | Justin Huggler
    Criminals in the German city of Cologne appear to have lifted a plan straight out of a Sherlock Holmes story when they robbed a jewellery shop by tunnelling in from underneath. The proprietor of the store in the city’s Londoner Platz, were astonished when he opened up on Monday morning to find a gaping hole inside his display case, and €100,000 of diamond jewellery missing. Police discovered that the robbers had tunnelled their way into the display case from the basement below, drilling their way through the reinforced concrete floor. The shop’s name, Goldfinger, may be reminiscent of the James...
  • Diamonds Beneath the Popigai Crater -- Northern Russia

    11/25/2014 8:36:15 AM PST · by JimSEA · 19 replies
    Geology.com ^ | 11/25/2014 | Hobart King
    About 35 million years ago an asteroid about 5 to 8 kilometers in diameter, travelling at a speed of about 15 to 20 kilometers per second slammed into the area that is now known as the Tamyr Peninsula of northern Siberia, Russia. [1] The energy delivered by this hypervelocity impact was powerful enough to instantly melt thousands of cubic kilometers of rock and blast millions of metric tons of ejecta high into the air. Some of that ejecta landed on other continents. The explosion produced a 100 kilometer-wide impact crater with a rim of deformed rock up to 20 kilometers...
  • Diamond Mines in Canada

    09/18/2014 6:37:42 PM PDT · by JimSEA · 21 replies
    Geology.com ^ | 09/18/2014 | Hobart King
    Throughout the 20th century most people would never have thought about Canada being an important producer of diamonds. [1] Their knowledge of diamonds was fixed on mining operations in Africa and diamond trading centers in Europe. All of this started to change in 1991 when two geologists, Chuck Fipke and Stewart Blusson, found evidence of diamond-bearing Kimberlite pipes about 200 miles north of Yellowknife, Northwest Territories. One of these pipes would soon be developed by BHP Billiton into the EKATI Diamond Mine, which produced Canada's first commercial diamonds in 1998.
  • Recent Advances in Understanding the Geology of Diamonds

    06/22/2014 1:45:14 PM PDT · by JimSEA · 5 replies
    GIA: Gems and Gemology ^ | Winter, 2013 | Steven B. Shirey and James E. Shigley
    ABSTRACT It has been more than two decades since diamond ages have proven to be up to billions of years older than their host magmas of kimberlite or lamproite. Since then, there have been significant advances in the analysis of diamonds and their mineral inclusions, in the understanding of diamond-forming fluids in the mantle, and in the relationship of diamonds to the deep geology of the continents and the convecting mantle. The occurrence of natural diamonds is remarkable and important to earth studies. This article reviews current thinking of where, how, when, and why natural diamonds form.