That's one very big crown... more than a cubic metre of gold.
110X110x110=1,331,000 cubic centimetres.
At 1800 grams that's divided by 1,331,000 cc which means there isn't a lot of gold in that gigantic crown.
Methinks you made a boo-boo in your figures.
But I don't know if you meant 110cc or 110mm or 110cm cubed.
This is a very simple problem but the numbers are out of whack I think. You have to pay attention to that kind of thing.