What symbols are on real gold?

What symbols appear on real gold vary. Sometimes, you will see stamps that read "AU." This abbreviation for gold may appear before or after a hallmark that denotes the type of gold alloy, such as "18k" or "14K." Alternatively, you may see a number placed inside a hexagon. The numbers will most likely be 585 for 14-karat gold, 750 for 18-karat gold or 916 for 22-karat gold. If you need help determining whether a particular piece of jewelry is real gold, consult an experienced jeweler or certified appraiser. On 1stDibs, shop a diverse assortment of gold jewelry.