For handicrafts and artesanias, the state-run Artesanias de Colombia near the Iglesia de las Aguas (Carrera 4 No 18-60) has a reliable selection at fixed prices. The weekend flea market at Usaquen in the north is more atmospheric -- local designers, antiques, and street food. Unicentro and Centro Comercial Andino are the main shopping malls. Emeralds are a Colombian speciality, but buy only from reputable dealers.