B.R.I.C.S. Global Reserve Currency? 'RSJ'

BRICS's Plans for a Common Currency between the following country's Brazil, Russia, India, China, South Africa. This Common Currency will be 'Gold Backed' Unlike the current currency which Warren Buffet arrogantly reminded the 'World' "Everyone Knows the Reserve Currency Globally is the U.S. Dollar." (Quotation included).                                                                                                          Reality dictates: Whichever currency is adopted one will be gold backed, one will not? 

So moving forward will B.R.I.C.S. become the reserve currency for the 'New Digital  Currency Globally' creating a New World Order?