Value: Usually the cheapest option. Contains real gold, but very little (about one gram of real gold in one pint of solution can be used to plate thousands of pieces!). Cheaper jewelry will have a very thin plating which wears off fast, but some higher quality brands will have a thicker plating with an additional protective coating to help it last longer.
How to find: Will have no quality mark on the jewelry, but may have company name/logo stamped.
Gold-Plated over Sterling Silver
Value: Still gold plated metal, but with valuable sterling silver. Sterling silver is a sought-after material ($0.57 per gram*) while still being very affordable compared to gold ($43.40...