This is a utility token designed for the sale of physical assets such as gold, fully tokenized.
It is a whole ecosystem with different associated tokens, Digix Gold (DGX) and DigixDAO (DGD) the way in which each one is used according to the intended purpose.
The main advantage is that your token is backed with gold, its price fluctuates in consideration with this high value metal. Another aspect is that you can claim your gold in physical always.