Vincent Yu/AP
  • Costume jewelry turns out to be a real diamond

    An image issued by auction house Sotheby's, on May 22, 2017, of a large 26.27 karat diamond ring, "costume jewelry" diamond really worth hundreds of thousands. Thirty years ago on what was thought to be a piece of costume jewelry, turned out to be a 26.27 carat white diamond. The gem was bought at a car boot sale in the U.K. and is expected to fetch about $454,000 when it is auctioned by Sotheby's next month.
    Sotheby's via AP Photo
  • Most valuable cut diamond, the "Pink Star"

    The "Pink Star" diamond, the most valuable cut diamond ever offered at auction, is displayed by a model at a Sotheby's auction room in Hong Kong. The stunning 59.6 carat diamond sold for $71.2 million, setting a record for any diamond or jewel.
    Vincent Yu/AP
  • Rare 887-carat emerald up for auction

    This is the 887-carat "La Gloria," a rare emerald that is part of a larger collection of rare gems and will be up for auction in April. The gem has what is called, "a small surface calcite matrix" which helps to identify it coming from the Muzo mine in Columbia.
    Photos courtesy of Guernsey's
  • One of the largest uncut diamonds discovered in Sierra Leone's Kono district.

    A diamond believed to weigh over 700 carats in size is held by Sierra Leone's President Ernest Bai Koroma in the presidential office in Freetown, Sierra Leone, March 16, 2017. It was discovered by a minister who turned it over to the government, saying he hopes it helps to boost recent development in his impoverished nation.
    AP Photo
  • World's Most Expensive Rough Diamond on Display

    Jewelry company de Grisogono displays the Constellation rough diamond, measuring over 6 centimeters wide during a news conference in Paris, Sept. 9, 2016. De Grisogono purchased the rock for $63 million. The Constellation weighs 813 carats and was discovered by Canadian company, Lucara Diamond, at its Karowe mine in Botswana in November 2015.
    Charles Platiau/Reuters
  • A Rare Fancy Vivid Blue Diamond

    During a press preview by Christies's auction house it shows the 'Oppenheimer Blue,' a rare fancy vivid blue diamond weighing 14.62 carat is seen in Geneva, May 12, 2016.
    Fabrice Coffrini/AFP/Getty Images
  • Tennis Ball Sized Diamond Could Fetch More Than $70 Million

    A Sotherby's employee holds Lesedi La Rona Diamond on May 3, 2016 in New York. The diamond, which is the size of a tennis ball, is the largest discovered in more than a century and could sell at auction for more than $70 million. Sotheby's says it will offer the Lesedi la Rona diamond in London on June 29.
    Donald Bowers/Getty Images for Sotheby's/AP
  • Sotheby's Unveils 100-Carat Diamond

    An employee holds a 100-carat perfect diamond at Sotheby's auction house, Feb. 13, 2015, in London. Forming part of the Magnificent Jewels sale in New York, April 21, 2015, it is expected to fetch between $19-25 million.
    Carl Court/Getty Images
  • 8.41-Carat Pink Diamond Sells for Record $17.77M

    <p> Sotheby's Hong Kong sold an 8.41-carat pear-shape &quot;internally flawless fancy vivid&quot; purple-pink diamond as part of the Magnificent Jewels and Jadeite Autumn Sale 2014 on Oct. 7, 2014 at the Hong Kong Convention and Exhibition Center. The gem, estimated to be worth $12.8 to $15.4 million, sold for a record $17.77 million. The auction house also achieved the world auction record price per carat for any sapphire ($236,404 per carat) when a 17.16-carat Kashmir sapphire and diamond ring sold for $4.06 million.&nbsp;</p>
    Sotheby's Hong Kong
  • Four Rare Fancy Red Diamonds

    <p> Four rare red diamonds from the 2014 Rio Tinto Diamonds Tender collection were up for auction until October 8, 2014. The largest of the four &quot;Fancy Red&quot; diamonds is the Argyle Cardinal, second left, a radiant cut 1.21 carat diamond named after the small North American bird. The Argyle Cardinal was sold for an undisclosed amount.&nbsp;</p>
    Rio Tinto
  • 'Exceptional' 122.5 Carat Blue Diamond Unearthed

    A rare 122.5 carat blue diamond, which could be the most valuable ever found, has been unearthed at Cullinan mine in South Africa. The mine is owned by a London-based company Petra Diamonds Limited. In the photo, CEO Johan Dippenaar holds the "exceptional" blue diamond recovered in June 2014. On June 13, 2014, Petra said in a statement that it is evaluating the diamond. The highest price on record paid for a rough diamond was about $35.3 million in February 2010 for a 507 carat white stone, also recovered from Cullinan, according to the Telegraph.
    Petra Diamonds
  • Christie's Auctions 'The Blue'

    Christie's auctioned a 13.22 carat, pear-shaped blue diamond for $24 million in Geneva, Switzerland, on May 14, 2014. Called "The Blue," it is the largest flawless fancy vivid blue diamond to ever appear at auction. The previous record for a vivid blue diamond was the $15.7 million BVLGARI Blue, a two-stone fancy vivid blue triangular-cut diamond of 10.95 and 9.87 carats sold through Christie's New York in Oct. 2010. Swiss watchmaker Swatch, which bought Harry Winston last year, is renaming the diamond The Winston Blue. "When Christie’s announced they were offering the largest flawless fancy-vivid blue the [Gemological Institute of America] had ever graded, I had to buy it," Harry Winston CEO Nayla Hayek said in a statement.
  • 100-Carat Yellow Diamond

    A Sotheby's employee shows The Graff Vivid Yellow at 100.09 carats, one of the rarest yellow diamonds of its size, which was sold for about $16 million at auction in Geneva, Switzerland, May 13, 2014.
    Martial Trezzini/Keystone/AP Photo
  • $55 Million Watch

    Graff Diamonds unveils the $55 million "Hallucination" watch made of 110 carats of rare multi-colored diamonds. It was introduced at the 2014 Baselworld watch and jewelry fair and is for sale.
    Graff Diamonds
  • Babe Ruth Watch Auctioned

    Babe Ruth's 1923 World Series Championship watch, for the Yankees' first championship win, sold for $717,000 on Feb. 22, 2013. As Ruth's cancer progressed, he asked his friend Charlie Schwefel if he wanted anything from his collection. The Manhattan hotelier asked for the watch. It remained in his possession for two years before his wife gave it to her nephew, Lewis Fern.
    Heritage Auctions
  • Babe Ruth's Watch Auctioned

    Babe Ruth's 1923 World Series watch, given to all his New York Yankees teammates after they beat the crosstown rival New York Giants in six games, represented the first franchise World Series victory of 27 to date. Heritage Auctions said it sold three other watches awarded to other players, but "none can even begin to compare in importance to this one." He batted .368, with three homers.
    Heritage Auctions
  • Blue Diamond Found in South Africa

    Mining company Petra Diamonds found a rare 29.6-carat blue diamond in South Africa in the Cullinan mine, near Pretoria, the nation's capital. In a statement, Jan. 21, 2014, Petra said it's a vivid blue with "extraordinary" tone and clarity."
    Philip Mostert/Petra Diamonds/AP Photo
  • The Pink Star Diamond Sets Record for Auction at over $83 Million

    Mined by De Beers in Africa in 1999 and cut and polished over a two-year period, The Pink Star 59.60-carat, oval-cut, internally flawless, Type IIa, fancy vivid pink diamond sold for $83,187,381 by Sotheby's on Nov. 13, 2013, setting a world auction record for any jewel or diamond. On the same day, Christie's set a record with an orange diamond that sold for $36 million.
    Toby Melville/Reuters
  • 'The Orange' Sells for $36 Million

    "The Orange" a 14.82-carat pear-shaped, vivid orange diamond sold for $36 million in Geneva, Switzerland. When it sold on Nov. 13, 2013, it set a per-carat record for any colored diamond at auction and set a record for an orange diamond of its type, Christie's said.
    Fabrice Coffrini/AFP/Getty Images
  • World's Largest White Diamond Up for Auction

    A 118.28-carat white diamond sold in Hong Kong, Oct. 7, 2013, for about $30.6 million, or HK$238.68 million, the most paid for a white diamond. It is the biggest diamond ever sold at auction. The previous record price for a white diamond was $26.7 million. The largest D-color flawless type IIA diamond was mined in South Africa in 2011. Sotheby's didn't disclose the buyer and seller.
    Vincent Yu/AP Photo
  • World's Largest Round-Cut Diamond for Sale

    The world's largest round-cut diamond was set to fetch over $18.6 million when it went on Sotheby's auction block in Hong Kong on Oct. 7, as part of the Magnificent Jewels and Jadeite Autumn Sale 2013. But it remained unsold. The very rare 7.59-carat diamond, named Premier Blue, is internally flawless and is the largest round fancy vivid blue diamond graded by the Gemological Institute of America.
    Courtesy Sotheby's
  • U.S. Marshals Service Auctions Jewelry, Gold

    This image provided by Gaston & Sheehan Auctioneers shows a platinum Rolex watch with oyster and diamonds, one of the items auctioned off June 1, 2013, in Las Vegas. The auction features precious metals, gems and jewelry confiscated by U.S. Marshals during federal criminal cases. Bidding for the watch began at $93,500 and was estimated to be worth $165,000 to $180,000.
    Gaston & Sheehan Auctioneers/AP
  • Largest D Color Flawless Diamond Ever Offered For Sale

    A D color "flawless" diamond, the second largest to be offered for sale, weighs 101.73 carats. It sold for $26,737,913 at Christie's auction house in Geneva, Switzerland. The largest pear-shaped color flawless diamond, the highlight of the "Magnificent Jewels" auction on May 15, 2013. It was expected to reach $30 million and is called "Winston Legacy" diamond, said Christie's.
    Salvatore Di Nolfi/Keystone/AP Photo
  • Pink Diamond Sells for $39.3 million

    This rare pink diamond, nicknamed the Princie Diamond and discovered in a mine in India, sold for $39.3 million in New York City. The 34.65-carat diamond had the second-highest auction price ever for a jewel. An anonymous buyer won it from Christie's on April 16, 2013. It belonged once to Nizam of Hyderabad, an Indian prince, but the name comes from the son of Maharani Sita Devi, said the AP.
    Christie's/AP Photo
  • 77 Carat Butterfly Brooch

    The Smithsonian's National Museum of Natural History are displaying a 77 carat brooch starting March 6, 2013. The "Royal Butterfly Brooch" is made of 2,328 gems, including sapphires, diamonds, rubies and garnets. Officials say it's worth $680,000. Taiwanese jewelry artist Cindy Chao created it in 2009 and donated it, making it the first Taiwanese-designed item in the National Gem Collection.
    Smithsonian's National Museum of Natural History/AP Photo
  • 'Archduke Joseph' Diamond Sold for $21.5 Million

    Christie's auctioned the "Archduke Joseph" diamond, which weighs 76.02 carats and was mined at the legendary Indian Golkonda mine, for $21.5 million to a phone bidder, a record for a colorless diamond at auction. It was expected to reach between $15 and 20 million in Geneva on Nov. 13, 2012. The diamond is about the size of a quail's egg and is named after the Archduke Joseph August of Austria.
    Fabrice Coffrini/AFP/GettyImages
  • $70 Million All-Diamond Ring

    Shawish Jewelry of Switzerland has introduced a 150-carat ring it says was cut completely from a single diamond. The jeweler calls the dazzler the "world's first all-diamond ring." It is valued at about $70 million.
    Shawish Jewelry
  • Emerald Ring Found in Wreckage

    An emerald ring worth about $500,000 was discovered in the wreckage of a Spanish ship that went down in the Florida Keys in 1622, according to WPLG. It was found on June 23, 2011.
    Courtesy of WPLG
  • Expensive Items

    The 2006 Victoria's Secret Hearts on Fire Diamond Fantasy Bra adorned with more than 2,000 flawless, round-cut diamonds set in white gold is valued at $6.5 million.
    Victoria's Secret
  • Expensive Items

    Want to let everyone around you know that you're richer than they are? This $1.2 million luxury cell phone from Swiss company GoldVish should do the trick. Eighteen-karat solid gold and covered in more than 100 carats of only the finest diamonds, the "Piece Unique" houses a high-tech cell phone including a camera and mp3 player.
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