Gold stamped "925" is probably gold-plated sterling silver. The "925" is part of a precious metals hallmark system, but only silver is denoted "925," or 92.5 percent, pure.
Hallmarks are legends stamped on items made of precious metals, especially items large enough to have intrinsic value due to their precious-metal content. These hallmarks are composed of at least three symbols: the sponsor, the purity and the assay office approving the purity measurement. Any item that does not include these three symbols has no guarantee of purity.
The stamp "925" refers to purity, specifically the minimum parts per thousand of the item's precious metal content. Each precious metal uses only certain numerical standard measurements of purity. Gold does not use the number "925." It is not uncommon for the composition of "gold" jewelry to in fact be gold electroplate over hallmarked silver.Learn More
A "925" stamp on a piece of gold jewelry usually has no relationship with the gold but with the silver underneath. A "925" stamp on silver denotes a 925/1000 part purity, or a sample of silver that's 92.5 percent pure.Full Answer >
The imprint "18k HGE" on gold essentially means that the gold is costume jewelry with little or no value. "HGE" stands for "hard gold electroplated," which means the object is not solid 18 karat gold throughout. "18k" refers to the type of plating used on the outer surface of the object.Full Answer >
Though not required by law, most gold jewelry pieces carry a quality mark that denotes the proportion of pure gold each contains. The letter "K" in the mark stands for the word "karat," the unit used in the gold-content rating system.Full Answer >
The number 925 stamped on a gold piece of jewelry usually means that the jewelry is not entirely gold; it is sterling silver that has been gold plated. The number normally indicates the purity of the silver used, not the quality of the gold.Full Answer >