Be aware that gold flutes are 14K gold (not 24K). 14K is commonly called “rose gold” and is closer in color to copper than the yellow 24K. If you know of any firm in the USA that does “rose gold” plating, please post the info here. Thanks.
This is a VERY common question for flute players and one I’ve been asked personally many times over the years. I used to think flautist was correct (or at least sounded hipper), but actually, flutist makes more sense. Why? Because flautist probably comes from the Italian “flautista” and since my language is English (American to be precise…), it’s flutist.