The 9.74ct Fancy Vivid blue diamond was bought by a private collector from Hong Kong who fought off competition from six other bidders during a tense 20-minute auction and went on to christen the record-breaking stone "The Zoe Diamond".

The 9.74ct Fancy Vivid blue diamond was bought by a private collector from Hong Kong who fought off competition from six other bidders during a tense 20-minute auction and went on to christen the record-breaking stone "The Zoe Diamond".