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Pure gold is expensive. Like most precious metals and gemstones, the only real reason that it has so much value is because of market pricing. You can get the exact same look of a pure gold piece at a fraction of the cost. This can be achieved through gold filling and gold plating. These are similar processes, but there are a number of differences that are important to recognize between the quality of gold filled vs gold plated.
What exactly is the difference between filled and plated? Here is everything you’ll need to know.
This is a process that gives a piece the appearance of gold without the expense.
When making a gold-filled piece, gold is pressure bonded to a base metal known as jeweller’s brass. This is a high-quality metal that is extremely resistant to wear and tear. Using high pressure and high heat, the gold is overlaid on top of the brass to give the appearance of authentic gold.
Despite its name, gold filling is only laid on top of the piece to give it the signature appearance. It is not actually filled with gold. The process is complex, which explains why it can be harder to come across gold-filled jewellery options as opposed to gold-plated ones.
By law, a gold-filled piece must contain at least 5%, or 1/20, gold by weight. So if you see a necklace described as being 12k gold-filled, it means that it is 12/20 gold-filled.
While gold filling is sturdy because of the binding jeweller’s brass, it can be just as expensive as solid gold pieces. It can be tough to justify this when gold-filled products are still not purely gold.
Much like gold filling, gold plating is an alternative to pure gold. It is a prevalent practice in jewellery manufacturing because of its ease of production yet authentic appearance.
Gold plating uses a process called electroplating, in which a base metal is cleaned with industrial-strength disinfectants to ensure proper bonding. Then, a thin layer of nickel is placed on the base metal, which helps to make sure that the gold does not react negatively with the base metal.
Base metals can be made of all sorts of materials. Silver and copper are common examples. However, stainless steel is very high-quality, so pieces that use this as a base material will tend to last a bit longer and have a more authentic feel.
Finally, the covered metal is dipped into a melted gold liquid and electrically bonded together, forming the finished piece. Gold plating thickness is determined in microns or micrometers.
Gold plating tends to be a much thinner gold layer than gold filling. Typically, it makes up about .05% of the product’s total weight. However, these are very inexpensive options that look just as good, if not better, than their pure alternatives.
The great thing about both of these options is that they use real gold in their production. The only difference is that they are not made entirely of gold. However, since both are composed of real gold on the surface, there is no way to tell the difference with the naked eye.
These are affordable alternatives that are more widely accessible for a commercial consumer as opposed to pure gold metal. They look and feel just like the real thing, so there really is no reason not to go with the cheaper option.
Most jewellery will come with a marker that can help determine how the piece was created. If the piece is labeled GP, it means that it is gold-plated. Subsequently, a stamp of GF means that it is gold-filled.
There are some variations of these markings, such as HGP, which means that a piece is heavy gold-plated. This just means that the gold layer is a bit thicker than a typical gold-plated piece.
However, if your necklace doesn’t have a marking, or you just want to be sure, you’ll need some help from a professional. The most basic and conventional approach a jeweller will take is to conduct an acid test.
In this practice, a small drop of acid is placed onto the jewellery . If the acid dissolves, it means that the piece is plated, as the surface is porous enough to allow the acid into the base metal. If it is filled, the acid will not dissolve and will instead remain on the surface. This test should only be done by a professional, so do not attempt it yourself.
The other way is through electronic testing. With this, a professional jewellery will use a special device to reveal the thickness of the gold alloy that was used in the accessory. Based on the thickness, the jewellery can then determine if filling or plating was used.
Based on all of this, it’s important to realize that you can’t tell the differences between pure gold, gold filling, and gold plating with the naked eye. They require either observation of microscopic markings or professional assistance.
Both filling and plating are cheap alternatives to buying pure gold, and they are great for expanding your collection of jewellery . While filling does tend to be more tarnish-resistant due to the jeweler’s brass as the base metal, gold-plated pieces can last just as long.
With gold plating, it is important to keep it away from oils and chemicals, such as chlorine. You’ll also want to use mild soaps to clean it every now and then. This will extend the life expectancy of your favorite accessories with minimal effort.
So if you want something that won’t require as much maintenance over time, you might want a piece that is gold-filled. However, if you want something that is more affordable and easily repaired, it is recommended that you look for a piece that’s been gold-plated which can be replated by a jeweller when the plating begins to wear off.
Any alternative to real gold is going to be a better bang for your buck, as you can save money without sacrificing the look of a chain. Gold filling and plating are two modes of producing gold jewellery at a lower cost.
Although gold filled pieces are more durable, plated pieces are much more cost-effective and can last just as long with maintenance.
Overall, gold filled jewellery will have a higher gold content than gold plated and will require less maintenance to retain the gold content looking its best whereas gold plated may tarnish more quickly and rub off over time.