This is still refered to as "precious metals". Gold filled items are perfect if you're looking for a material that is higher quality than gold plated, but an affordable alternative to solid gold. Unlike gold plated, gold filled can lasta lifetime if taken care of properly, and isn't affected by water or hot weather. It is also tarnish-free under normal conditions.

Vermeil, also known as “silver gilt”, refers to high quality (pure or sterling) silver that is plated with a thin layer of gold. Most vermeil jewelry available now is created by electroplating the silver with gold, a chemical process that uses an electrical current to bind the two metals together.

In order to be considered as true vermeil jewelry in the US, the piece has to meet certain qualifications. For instance, the gold on the piece needs to be at least 2.5 microns thick, and at least 10k or higher.

"Gold plating" (over brass, copper and stainless steel is an electrochemical process by which a thin layer of gold is deposited on the surface of another metal. An electric current draws gold ions, which are positively charged, through a gold bath solution, allowing them to adhere to the negatively charged piece of metal. Stainless Steel seems to be big right now due to its ability to slightly more anti-tanish and water resistant

Therefore, the price tag is
significantly cheaper. 

"Gold plating" (over brass, copper and stainless steel is an electrochemical process by which a thin layer of gold is deposited on the surface of another metal. An electric current draws gold ions, which are positively charged, through a gold bath solution, allowing them to adhere to the negatively charged piece of metal. Stainless Steel seems to be big right now due to its ability to slightly more anti-tanish and water resistant

Therefore, the price tag is
significantly cheaper.