What Is “GF” or “Gold-Filled” Jewelry?  Unlike solid gold jewelry, gold-filled jewelry is composed of a solid layer of gold that is bonded to a base of another metal, such as sterling silver or copper. While gold-filled jewelry is typically less expensive than solid gold jewelry, it is actually more durable, looking shiny and new even with decades of wear. Since gold never tarnishes and has great workability, many jewelry designers and makers prefer it to other metals. If properly cared for, gold can last indefinitely. It doesn’t oxidize or corrode, and only a handful of rare acids or hot chlorine bleach can damage it.  Pure gold jewelry is more expensive than gold-filled jewelry, but it does have one significant drawback: softness. This means it wears out easily. However, mixing gold with other metals creates gold alloy that are stronger, more durable, and better suited for jewelry use. While jewelers do use pure gold for some jewelry pieces, these dent and show wear so readily that most people don’t wear pure gold jewelry on a regular basis.