As you all know the volume traded in forex market is about 4 trillions. How about the volume in only XAU/USD? Is there a way to find out the real time volume?
The global turnover of the Forex market ( Spot, Options, Swaps, Futures and Forwards) is around 5 trillion dollars per day. The spot market is the largest of them.. Spot Forex pairs trading occupy 1.8 to 2 trillion dollars per day.
The data on daily gold volumes is very elusive and it's hard to come by accurate figures.. However, some studies estimate the average daily volume traded on London Bullion Market ( a big portion of the world's gold is traded there) to be around 200 billion dollars per day. Check out the above link, You'll find it useful.