The Biggest Natural Color Diamond Auction ever happened in Hong Kong, sold the most expensive diamond ever sold in Hong Kong. A 5.16-carat fancy vivid blue diamond that is internally flawless was auctioned for 4.2 m pounds at Sotheby’s Hong Kong. The spectacular, pear-shaped blue diamond is estimated to fetch between US $4.6 m to US $5.8 m (£3.8m) but ultimately purchased at a whopping 4,221,533 pounds . The Auction was held at the Hong Kong Convention and Exhibition Centre and was a part of Sotheby's Hong Kong Magnificent Jewels and Jadeite Spring Sale 2010.
This rare blue diamond formed the part of legendary De Beers’ Millennium Jewels Collection consist of 12 exceptional diamonds put together to mark the year 2000. The Natural Colored Diamond collection, which took decades to assemble, comprised 12 rare gems all cut and polished by Steinmetz and laser inscribed with a special serial number. Although the diamond was currently part of a private collection, this was the first time that any piece from the collection has been available at auction.
Blue diamonds are among the rarest of all gemstones, their natural blue color to the presence of boron during the stone's formation. These are greatly admired are the highest per-carat priced at auction due to their combination of color, brilliance and rarity that makes them so special. Some of these unique stones were sold for $550,000-$580,000 per carat in the past.
