Gold vermeil, gold-plated jewelry are a little similar in concept. There are some differences in execution and materials distinguish these two methods.
Gold-plated jewelry
There is no standard metal or gold thickness when it comes to gold-plate. You can find gold plate in a variety of thicknesses and on a range of varying metals and alloys. With gold-plating, there is the high likelihood of the gold finish wearing out and chipping over time as the gold coating is very thin.
Gold vermeil is not similar to gold plated in terms of affordability and amount of gold used. The main difference between the two is that vermeil has its strict standards and is made entirely of precious metals (both silver and gold are considered precious metals) while gold plated has different levels of gold thickness and is made with any base metal. That's why gold vermeil will not tarnishes as time goes, because it has a thick layer of gold coating than gold plated jewelry,and it's 100% Nickel Free.