For the jewelry and accessories designer Kara Ross, 2013 has been a breakout year. It marks the 10th anniversary of her eponymous brand and fine-jewelry collection, and it coincides with the appearance of her work in three major museum exhibitions. The final coup among her accomplishments: opening her first boutique just in time for holiday shopping.  
The boutique is located in New York City at 655 Madison Avenue—steps away from Barneys and directly opposite the clubby restaurant Le Bilbouquet; the neig…