Bonding a layer (or layers) of gold alloy to a base metal and then rolling or drawing the metal to the thickness desired. The gold content must be 1/20th or more of the total weight of the metal in the piece.
An item made of a base metal such as brass or copper, to which a sheet of gold is bonded by pressure or other means. To qualify as gold filled; an article of jewelry must have a layer of gold at least 1/20th, or 5% of the weight of the entire article.
Base metal or silver that has a layer of high karat gold bonded by heat and pressure, not electroplated, over its surface.
A mechanical process of sandwiching a base metal with real gold. The layer of gold is thicker than "rolled gold plate", or "gold plate".
abase metal between two layers of gold. Usually marked with a g.f.
Base Metal with a gold layer mechanically applied. The gold content is 1/20th the total weight of the component. The gold is much thicker than a gold plated item.
Alloy made of a hard base metal with an outer layer of gold.
Has a base-metal core, often nickel, with gold over-lay that is heat -and-pressure bonded to it. I prefer to use 14kt gf. It causes fewer allergic reactions and is cost-effective.
In this technique, a sheet of gold is mechanically applied to the surface. Victorian pieces are likely to be unmarked, but later pieces are marked with the fineness of the gold layer, and the part by weight of the gold. For example, a piece marked "1/10 12K G.F.," is composed of at least 1/10 12K gold based on the weight of the finished piece. In the U.S., gold-filled pieces must be at least 1/20 by weight to be classified as gold filled. An older, unmarked gold piece may often be identified by wear through to base metal, especially when viewing corners or edges under magnification. Look for a change to a darker, brassy-colored material at these spots.
A layer of gold joined to a base metal by a mechanical process using heat and pressure. By US law, the gold layer must be at least 1/20th of the total weight of the metal. Gold Plated- A layer of gold applied to a base metal, which is less than 1/20th of the total weight. Gold Wash- A very thin coating of gold over a base metal.
Watch cases made from layers of gold with brass or other base metal in between.
made by placing a piece of brass or other cheaper base metal and placing it between 2 pieces of gold. The 3 pieces were then bonded together to make one piece of metal. It was then run through rollers until it was thinned down to the desired thickness. At this point it would be like plywood or veneered wood. The item was then punched out or cut from the sheet and the bare edge covered. Not the same as rolled gold.
A layer of at least 10-karat gold bonded to the surface of a support metal. The karat gold must be at least 10% of the total weight. Also called gold overlay.
(Also "Goldfilled", or "gold-filled", abbreviated g.f.) A piece of jewelry with a layer of gold mechanically applied to the surface of a base metal, (like brass or copper), can be called Gold Filled if the amount of gold equals one-twentieth of the total weight of the piece. Victorian pieces are likely to be unmarked, but later pieces are marked with the fineness of the gold layer, and the part by weight of the gold. For example a piece marked "1/10 12K G.F." is composed of at least 1/10 12K gold based on the weight of the finished piece. An older unmarked gold piece may often be identified by wear through to base metal, especially when viewing corners or edges under magnification. Look for a change to a darker, brassy colored material at these spots.
Base metal sandwiched between layers of gold. In the US the gold layer must be at least 1/20th of the total weight and is marked: g.f.
A less expensive alternative to pure karat gold. Gold filled means that it is at least 1/20th the weight of the item is pure gold. The term "Gold Filled" may also be accompanied by the karat ratin. ie: 14/20 would be 14 karat gold filled.
An item with a sheet of gold applied to its surface. Newer items contain markings that indicate how much and what type of gold was used in the layer. A marking of 1/20 12K G.F. means that the piece is at least 1/20th 12K gold by weight.
Gold Filled (GF) is a layer of 10Kt or better gold mechanically bonded under heat & pressure to one or more surfaces of supporting base metal, then rolled or drawn to a given thickness. In the jewelry industry the quantity of gold must be at least 1/20th by weight of the total product. Under FTC (Federal Trade Commission) regulations, a product may be marked as 14, 12 or 10Kt Gold-Filled. Karat measurement of the gold content MUST be part of the marking or designation. The amount of real gold used is why GF items are always much more expensive than their gold plated counterparts (or items that say they are 'Gold Filled' that don't specifically tell you the karat rating!)
Refers to jewelry containing a common metal such as nickel that is coated with gold.
Jewelry that is plated to a thickness that results in at least 1/20th of the weight being gold.
Any metal covered by a thin layer of gold. The layer must be at least 10k gold and 1/20th of the total weight of the piece.
Gold filled (abbreviated G.F. or written as "doublé d'or") jewelry is made of a thin outer layer of gold atop a base metal. For example, jewelry marked 1/20 G.F. 12 Kt. is at least 1/20th gold and is layered with 12 karat gold. To be classified as gold-filled, a piece must be at least 1/20 gold by weight.
The jewelry is not actually filled, but is made of base metal (usually brass or copper) covered by sheets of gold in a mechanical bonding process.