Rare ‘Mellon Blue’ diamond expected to fetch up to $30 million at auction<br /><br />Geneva’s November auctions will showcase the 9.51-carat “Mellon Blue” diamond, a Fancy Vivid Blue gem valued at up to $30 million, alongside the Glowing Rose pink diamond and historic jewels once owned by Napoleon.<br /><br />READ MORE : http://www.euronews.com/2025/11/09/rare-mellon-blue-diamond-expected-to-fetch-up-to-30-million-at-auction<br /><br />Let the pictures do the talking: subscribe to No Comment <br /> <br />No Comment is brought to you by euronews, the most watched news channel in Europe.
