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Many companies now sell gold plated bronze, due to the high cost of gold. It is very economical, much less than the more popular gold over silver.
QVC has a large line called Bronzo Italia. Shop HQ sells Toscana.
Gold plated bronze can potentially last up to two years with care before starting to flake off or tarnish.
Regular wear and exposure to cleaners, salt water or perfume will make it fade more quickly.
I consider gold plated bronze a type of costume jewelry, and think it best to purchase for larger pieces that would be exorbitant in price if done in gold. There is also almost no resale market for these jewelry pieces, but they can be very fun to wear!