GENEVA, Nov 16 (Reuters) - A rare pink diamond fetched 45.44 million Swiss francs ($45.75 million) on Tuesday, doubling the previous record to become the most expensive stone ever sold at auction, Sotheby's said.
The rectangular pink diamond, which weighs 24.78 carats and is about the size of a pinball, was the star lot among 550 on the block at semi-annual jewellery sales in Geneva.
