For those stopping over in Abu Dhabi, passengers will notice the revamp to all three airport terminals and the Abu Dhabi Duty Free area. The well known brand Pure Gold operates in all three terminals and they stock a good variety of pieces. Some passengers have even commented that prices can be very competitive against the gold souk in Deira, as Pure Gold at the airport normally charges for the weight of the gold and hardly anything for workmanship. Although it also depends on each piece of jewellery, i.e. for more intricate designs, a workmanship charge may be incurred.
You may get a steal, but in general, if you don't have visa issues, and have the time, buy outside of the Airport if possible.