Thomas Kaplan, an American billionaire investor and one of the world's most renowned art collectors, was recently asked about the price of gold during an interview. He said:
"I do believe gold embarks on the next leg of its bull market and goes past $1,900 and ultimately goes to $3,000 to $5,000, if not a lot higher..."
and this from Stansberry Research
Recently, we measured every gold bull cycle in recent memory (there have been eight distinct upcycles since 1975) and we discovered something interesting...
Only one bull market in recent gold history has returned less than 100%.
That means, when the price of gold rallies, it soars.
Even more exciting is that the biggest bull market – a 601% surge in gold in the early 2000s – occurred just
after a severe bear market.
Why does that matter?
Well, the bear market in gold – the one that kicked off in 2011, was as severe as the one that occurred right before the early 2000s.
As I said earlier, most investors don’t know this, but it was one of the worst gold stock bear markets in 40 years!
In other words, the gains ahead could be astonishing.
All you have to do is get into the right investments early in the next bull market.And that means you need to get in – right now.---------------------
If we are to get the same 600% rise from the start of the multi year gold bull market, we should be seeing $6000 or higher. The only question is how soon.
Look at the chart above- only 1 out of the past 8 bull markets had a gain less than 100% and the average of the 8 is 266% and applying the 266% average on roughly $1150 from early 2016 we get slightly above $3000. Perhaps this is how Goldman arrived at their 3000 figure, but if Luke Burgess is right, this bull would be the mother of all bulls that would get us well above $6000 in the years ahead because the level of money printing today has been both unprecedented and of historic proportions. 
