Check it out on Wikipedia! Search for “gold filled jewelry”
You’ll see they say in part “Gold-filled jewelry is composed of a solid layer of gold bonded with heat and pressure to a base metal such as brass. Some high quality gold-filled pieces have the look, luster, and beauty of 14 karat (58%) gold…”
- Gold filled items, even with daily wear, can last five to 30 years but will eventually do wear through
- Gold-filled items are 50 to 100,000 times thicker than regular gold plating, and 17 to 25,000 times thicker than heavy gold electroplate.
- Gold-filled jewelry is composed of a solid layer of gold bonded with heat and pressure to a base metal such as brass
This is why our White gold filled ring guards may appear slightly yellow against pure karat white gold or silver rings. Don’t worry though! When the ring guard is on, the “arms” wrap in an area that you won’t even notice it.