Rolled gold as far as I am aware is a thin layer of carat gold
wrapped around a bronze core, here in Ireland a company called J&Z
Blackman in Dublin produce an excellent variety of stone set bangles
in 1/10th and 1/20th rolled gold, these range from 3mm wire bangles
to 12mm half engraved or rope bangles. We have been selling them for
years and they have a good resistance to wear, we have had bangles in
for repair that were over 30 years old with the finish still perfect.
Gold plate on the other hand has a much thinner layer of gold which
wears much quicker, just like a wash really.