The accolade for the highest price paid per carat for a coloured diamond is held by the 14.82ct 'The Orange' diamond, which fetched $35.54 million at Christie's Geneva in November last year

The accolade for the highest price paid per carat for a coloured diamond is held by the 14.82ct 'The Orange' diamond, which fetched $35.54 million at Christie's Geneva in November last year.

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