Gold Filled 3 Emerald Stones Dangle Earrings

So what is the difference between gold-plated and gold-filled? 
Gold plating is a microscopic layer of gold, very thin.

These are beautiful, GOLD FILLED earrings.
"Gold filled" is thick layer of gold; 50-1,000 times thicker than a plate with usually at least a 5% Gold rating. 

Gold filled jewelry will maintain its quality and beauty for a life- time. With gold-filled jewelry, you won’t have to worry about tarnishing, the thin layer of gold wearing down, or nickel and other metal allergies.