Gold jewellery has been popular for thousands of years, and standards for its measure and purity have evolved over time. Before investing in gold jewellery, it's helpful to understand the various types of gold jewellery and its stamps and marks.
Gold has been traded throughout recorded history. Pure gold has the highest value, but it is rarely used in jewellery, as it is too soft to allow daily wear. To overcome this issue, gold is mixed with stronger metals, which decreases its value. To determine the difference in value between pure gold and gold mixed with other metals, various systems were developed to identify the purity of gold.
U.S. and European Gold Marks
In the United States, 100 per cent pure gold is marked "24 karat." Gold with lower gold content is marked according to its percentage: 18-karat gold is 75 per cent pure; 10-karat is 42 per cent pure. Europeans mark their gold with a decimal percentage system: Pure gold is marked "1,000," 18-karat gold is marked "750," and so on.
All That Glitters Is Not Gold
A piece of jewellery that bears one of the following marks is not gold: G.E.: gold electroplate H.G.E.: heavy gold electroplate G.F.: gold filled 925: sterling silver If it appears to be gold but is marked 925, it is probably what is known as vermeil, a thin layer of gold coating a solid base of silver. Vermeil can be beautiful, but it has little long-term value.
What If My Jewelry Has No Mark?
Unmarked gold-coloured jewellery is most likely simply costume jewellery of little value, but there are a few exceptions to this rule. Jewellery that was made before 1900 may not have a gold mark, and jewellery that was made by an artist or independent jewellery designer may not be stamped. The mark on a piece of jewellery that has had daily wear for many years may be worn away, and a ring that has been sized many times may have had its mark cut out or smoothed over.
How to Know for Sure
If you cannot find a mark on a piece of jewellery, have it tested by a reputable jeweller. If you are considering buying a piece of unmarked jewellery on eBay or a similar auction site, it's best to assume the piece is a fake. Most auction sellers know exactly what their jewellery is worth, and if a seller believed a piece was gold, he would have tested it to make sure he received top dollar for it.