Sparkling gems from Van Cleef & Arpels, Tiffany & Co., Cartier, and more will be up for sale in Fortuna Auction’s Fine Jewels sale on November 29. A range of antique and contemporary pieces will be available, including cuff links, objets d’art, colored stones, and diamonds. One of the highlights of the sale is a Van Cleef & Arpels “Mystery Set” ruby ring, estimated at $30,000 to $40,000, which has an invisible setting that takes hundreds of hours to craft. Other pieces include a Shreve, Krump & Low 8.94-carat Edwardian diamond engagement ring and a gold, enamel, pearl, ruby, and diamond Indian bangle. Those who won’t be in New York for the sale need not worry – bids will also be taken by phone, absentee, or online.