Solid gold, gold-filled, vermeil, gold plated: the labels sound similar, but they describe very different pieces that last for very different lengths of time. This guide explains what each one actually is, how long it lasts, and how to tell them apart, so you know exactly what you are buying.
Solid gold is gold all the way through, and it lasts a lifetime. Gold-filled, vermeil and gold plated are all a layer of gold over a cheaper base metal, and they differ mainly in how thick that layer is and how long it lasts, from a few months for plating to many years for gold-filled. Only solid gold never wears through to reveal another metal underneath.
What is solid gold?
Solid gold means the entire piece is made of a gold alloy, so the gold runs all the way through. Pure gold is too soft to wear every day, so it is mixed with stronger metals to give it durability, and that mixture, whether 9K, 10K, 14K or 18K, is still solid gold through and through. The important part is what this means over time: because there is no thin coating to rub away, solid gold cannot wear through to a different metal. It keeps its colour, holds its value, and lasts a lifetime, which is why it is the only gold that can genuinely be handed down. Its purity is measured in Karat, as 9K, 10K, 14K or 18K.
What is gold plated?
Gold plated jewellery is a base metal, usually brass, with an extremely thin layer of gold applied to the surface by electroplating. The gold layer is measured in fractions of a micron and makes up a tiny part of the piece, which is why plated jewellery is inexpensive. The trade-off is life span. That fine coating wears away with everyday contact, often within a few months to a year, revealing the base metal beneath. Because that base is frequently a nickel-bearing alloy, worn plating is also a common cause of irritated skin, particularly in earrings and anything worn against the skin all day.
What is gold vermeil?
Gold vermeil, pronounced ver-may, is a step up from ordinary plating in two ways. Its base is sterling silver rather than brass, and its gold layer must be thicker, at least 2.5 microns of 10K or higher gold, to be called vermeil. That makes it more durable than standard plated jewellery and, because the base is silver rather than a cheap alloy, kinder to skin. It is still a coating over another metal, though, so it will eventually wear, typically lasting a couple of years to around five with care.
What is gold-filled?
Gold-filled is the most durable of the layered types. Instead of a thin electroplated skin, it has a genuine layer of gold, at least 5 percent of the item's total weight, mechanically bonded to a base metal core under heat and pressure. That thick, bonded layer wears far more slowly than plating or vermeil, so gold-filled can last ten to thirty years with good care. It is a real and long-lasting option, but it is worth being clear that it is still gold over a base metal, not gold throughout, so it can eventually wear at high-contact points.
How long does each type last?
The clearest way to compare them is by how they are made and how long they hold up.
| Type | What it is, and how long it lasts |
|---|---|
| Solid gold | Gold alloy all the way through. Lasts a lifetime and does not wear through. |
| Gold-filled | A thick gold layer bonded to a base metal core. Around 10 to 30 years with care. |
| Vermeil | At least 2.5 microns of gold over sterling silver. Around 2 to 5 years. |
| Gold plated | A very thin gold layer over brass. A few months to a year. |
Why solid gold is worth it
Every layered type shares the same eventual fate, the gold wears and the metal beneath shows through, and the only questions are how soon and what that base metal is. Solid gold removes both. It never wears through, it does not need re-coating, and it keeps its colour for good, so a piece bought once is kept rather than replaced. That is why it costs more at the counter and far less over the years. It is also the kindest to skin, because there is no coating to wear away and expose a base metal like nickel underneath. For anything worn often or meant to last, solid gold is the choice that pays for itself.
One point of clarity, since it can be confusing. White gold is solid gold that carries a thin rhodium finish on the surface for its bright white colour, and that finish is refreshed occasionally. This is not the same as plating over a base metal: the gold underneath is solid and permanent, and only the surface tone is renewed, as our guide to white gold and rhodium plating explains.
How to tell what you are buying
The surest sign is the stamp. Solid gold is hallmarked with its purity, as 9K, 10K, 14K or 18K, or the equivalent numbers 375, 417, 585 and 750. Layered pieces are marked differently, often "GP" or "gold plated", "vermeil", or "GF" or "gold-filled", and a piece with no gold mark at all is very unlikely to be solid gold.
If you want a piece to last and to hold its colour and value, choose solid gold, marked 9K, 10K, 14K or 18K. Gold-filled is a reasonable long-term alternative, vermeil a shorter-term one, and plating is best treated as fashion jewellery for a season. When in doubt, look for the karat stamp, and ask if you cannot find one.
Everything at Noble is solid gold, never plated, so it is made to be kept. This sits within our wider guide to gold, and if sensitive ears are your reason for asking, solid gold is often the whole answer, which our solid gold earrings are made for. You will find solid gold across bracelets, necklaces and pendants and rings too.
