The numbers 750 stamped on jewelry means that it is 18-karat gold. The jewelry piece is 18 parts pure gold and six parts metal alloy.Know More
One hundred percent gold jewelry is 24 karats. Unfortunately, pure gold isn't very durable, so jewelers add stronger metals to it to keep it from denting. The more alloy in the gold, the more durable it will be, but the lower the karat number, the less value the jewelry may have.
Other common numbers found on fine gold jewelry are 585, or 14-karat gold, and 417, 10-karat gold. The numbers 833 are 20-karat gold, and pure gold will have the numbers 999.
Sterling silver is marked 925. That means that it is 92.5 percent silver and 7.5 percent alloy. Although silver is more durable than gold, the alloy gives it additional strength. Sometimes instead of a number, sterling silver jewelry pieces will be marked with the intials "SS."
Platinum is a popular metal currently for wedding rings. This white metal will usually be marked with a 900 or 950, which is 90 or 95 percent platinum and 10 or 5 percent alloy. Iridium is often the alloy paired with platinum.
Vermeil, or gold-plated jewelry, is usually sterling silver coated with gold. The thick coating can be 14-carat gold, in the case of vermeil, while other gold-dipped jewelry may be plated with 18-carat or even pure gold.Learn More
A 750 mark on jewelry means that the metal alloy used to make the jewellery contains 75 percent gold or another precious metal. Most precious metals used in jewelry are alloys because the addition of other metals improves hardness and durability. It also changes the color of the metal.Full Answer >
On jewelry, "585" is a measure of gold's purity and indicates that the piece is made from 14-karat gold. This number is derived from the percentage of pure gold expressed as parts per 1,000. This system of certification is widely used in Europe.Full Answer >
The number 925 on jewelry shows how much sterling silver is present in the piece. The number describes the parts per thousand. This specific number is most often present on silver flatware, jewelry and tea sets.Full Answer >
The "FB" stamp that is found on some jewelry is the initials of the designer Francois Borgel. The stamp is usually followed by a picture of a key.Full Answer >