GENEVA (Reuters) - A huge, internally flawless diamond from India's fabled Golconda mines was sold at auction in Geneva on Tuesday night for 20.355 million Swiss francs ($21.48 million), Christie's said.
The rare, colourless stone weighing 76.02 carats once belonged to Archduke Joseph August of Austria (1872-1962), a prince of the Hungarian line of the Habsburgs. Its pre-sale estimate was 15 million Swiss francs to 25 million Swiss francs.
The diamond was the star lot at Christie's semi-annual jewelry sale in Geneva, where more than 300 lots were on the block.
(Reporting by Stephanie Nebehay; Editing by Michael Roddy)
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