1. HolidaysChristmas is just about here, and everyone is wondering if customers will come with it. In September, Deloitte released its 2014 holiday sales forecast, predicting that retailers will see a bit of yuletide cheer. November and December sales will rise 4 to 4.5 percent, said the report—up from last year’s 2.8 percent increase. As to what those customers will buy, jewelers can’t go wrong with the trends du jour: rainbow palettes, geometric shapes, and celestial motifs, plus those now-ubiquitous ear cuffs and climbers.2. AuctionsFrom Wallis Simpson to Sarah Brightman to…you?Like animals on Noah’s Ark, these jewels travel as a pair. In the late 1950s, the fabulous feline brooch and bracelet, set with onyx and diamonds, with blazing emerald eyes, went from Cartier to ­Wallis ­Simpson—a gift from her husband, the Duke of Windsor. In 1987, at a landmark sale of the duche