CNN —Hundreds of jewels once owned by late Austrian billionaire Heidi Horten have fetched a combined 176 million Swiss francs ($196 million) to become the most expensive private jewelry collection ever to appear at auction. Heidi Horten pictured wearing the Briollete of India necklace, which sold for 6.3 million Swiss francs ($7 million). The most valuable lot, a ruby and diamond Cartier ring that is “pigeon blood” in color, fetched just over 13 million Swiss francs ($14.5 million), despite Christie’s expecting bids as high as 18 million Swiss francs ($20 million). A 90-carat “Briolette of India” diamond necklace by jeweler Harry Winston also came in below estimate, selling for 6.3 million Swiss francs ($7 million). courtesy Christie'sElsewhere, however, a Bulgari diamond ring more than doubled its high estimate to fetch 9.1 million Swiss francs ($10.1 million).

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