I find that gold makes much more moves every days and the additionally incorporate much more money as being able to trade throughout precious metals as owing to its spread beside since liquidity besided as volatility will surely be much more throughout precious metal your spread will surely be highers ! gold have high speed of movement, it makes the price up and down for many pips in every minutes. and i think it is the reason why the spread of gold is really big. but we still can get much profit, because it have high movement.