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.Know More
Gold jewelry with the 750 hallmark consists of 18-karat or 18K gold and bears a European hallmark. In the karat system used in America, pure gold contains 24 karats of gold, so the whole comprises 24 parts.
Replacing six parts with alloy metals yields a purity level of 75 percent. Adding palladium or nickel to yellow gold creates white gold. Adding copper produces rose gold.Learn more about Jewelry & Watches
When found on jewelry, "925 Italy" means that the item is at least 92.5 percent silver and that it is a product of Italy. "925 Italy" is only found on sterling silver, meaning silver that is actually a mixture of silver with other metals. "925 Italy" does not give any information as to which other metals the jewelry contains.Full Answer >
The hallmark 375 means the jewelry piece is made of 9 karat gold. A hallmark on gold jewelry, such as the hallmark 375, is a symbol used to certify the purity of the gold. The mark also points to the manufacturer, the assay office that certified the gold and the year it was tested.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 >
A piece of jewelry marked with 925 means that it is 92.5 percent sterling silver and 7.5 percent of another metal. This mark is most often seen on sterling silver pieces, but it may be imprinted on gold jewelry.Full Answer >