Gold-filled jewelry (also called Gold Overlay) 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. By definition, the minimum layer of karat gold in an item stamped GF must equal at least 1/20 the weight of the total item. 1/20 12kt GF is the most common stamp you will find on gold-filled jewelry. 10kt and 14kt are also common karatages. Gold filled items, even with daily wear, can last five to 30 years but will eventually wear through.
Care of Gold Filled Jewelry
Gold filled jewelry is cared for in the same manner as other precious jewelry. The absolutely best thing you can do for your Gold Filled jewelry is to clean regularly using a little bit of warm water, and a soft cloth to dry and shine after. Many chemicals marketed for cleaning jewelry are actually somewhat abrasive or corrosive and can cause some damage or color alteration to your jewelry. The best way to avoid this is to keep it simple. Warm water and a soft cloth are the best thing you can do to maintain the beauty of your jewelry.