Heiress' rare Stradivari violin to fetch millions By: CNBC.com News June 06, 2014 at 12:17 PM EDT One of the world's priciest violins, a Stradivari owned by Huguette Clark, was hidden away in a closet for decades. Now, it's up for auction at Christie's. Read More >> Related Stocks: New York Times Company Twitter, Inc.