If you have spent any time shopping for gold jewellery you have almost certainly come across the numbers 9ct and 18ct without anyone properly explaining what they mean. You may have also seen "gold plated" or "gold vermeil" used in ways that make the distinction between these terms feel deliberately blurred.
This matters more than most people realise. The difference between 9ct gold, 18ct gold and plated jewellery is not a minor technicality. It is the difference between a piece that will look beautiful for decades and one that will visibly change within a year of normal wear.
We think customers deserve to understand exactly what they are buying before they buy it. This guide explains the real difference between these terms, what each one means for the jewellery you wear every day and why it matters when you are spending your money on something meant to last.
What Does Carat Actually Mean?
Pure gold is measured in 24 carats. This represents gold in its most unalloyed form; 100% gold with nothing else mixed in.
Pure 24 carat gold is, however, too soft for almost any practical jewellery use. It scratches easily, bends under normal pressure and would not hold its shape through ordinary daily wear. This is why virtually all gold jewellery is alloyed (mixed with other metals such as copper, silver or zinc) to create something durable enough to actually wear.
The carat number tells you what proportion of that alloy is pure gold. 9 carat gold is 9 parts gold out of 24, meaning 37.5% pure gold content alloyed with other metals. 18 carat gold is 18 parts gold out of 24, meaning 75% pure gold content. Both are genuine, solid gold. Neither is fake. They are simply different points on the same spectrum of gold purity.
9ct Gold vs 18ct Gold: What's The Difference?
The most obvious difference between 9ct and 18ct gold is colour depth. 18ct gold has a noticeably richer, warmer tone because it contains twice the proportion of pure gold. 9ct gold has a lighter, slightly more understated colour because a larger proportion of the alloy is made up of other metals.
The second difference is durability, and this is where many people's assumptions run in the wrong direction. Counterintuitively, 9ct gold is actually the more hard-wearing of the two for everyday jewellery. The higher proportion of alloy metals in 9ct gold makes it more resistant to scratching and denting than the softer, higher-purity 18ct gold. This is precisely why 9ct gold has long been the standard choice for rings, bangles and other pieces made by John Garland Taylor Jewellery that experience regular daily contact and movement.
The third difference is price, which follows directly from gold content. 18ct gold contains twice the pure gold of 9ct and is priced accordingly. This does not make 18ct a "better" choice in any absolute sense, it simply reflects a different balance of richness of colour against everyday durability and cost.
Both 9ct and 18ct gold are entirely genuine, hallmarked, solid gold. The right choice between them depends on how a piece will be worn and what depth of colour you are drawn to, not which one is more "real" than the other.
So What Is Plated Gold Jewellery?
Gold plated jewellery is not gold in the way that 9ct or 18ct gold is gold. A plated piece of jewellery is typically made from a base metal (often brass or sterling silver) with an extremely thin layer of gold applied to the surface, sometimes measured in fractions of a micron.
This distinction matters enormously for how a piece behaves over time. Solid gold, whether 9ct or 18ct, is gold all the way through. If it is ever scratched, polished or worn down over decades, it remains gold. A plated piece is only gold on its outermost surface. Once that thin layer wears away through normal contact with skin, clothing and daily life, the base metal beneath becomes visible. This typically happens within months to a couple of years depending on how the piece is worn, not because the piece was poorly made but because that is simply the nature of plating as a process.
Gold vermeil sits one step above standard plating, it specifies a thicker layer of gold over sterling silver rather than a base metal, and as such it lasts somewhat longer. It is, however, still a coating rather than a solid precious metal, and will eventually show the same wear pattern as any plated piece.
None of this makes plated jewellery inherently bad. It has a legitimate place for costume pieces, fashion-led purchases or items meant to be worn for a season rather than a lifetime. What it should never be mistaken for is solid gold, and the price difference between plated and solid gold exists precisely because they are fundamentally different products.
So, Should I Buy Plated Jewellery or 9ct Gold Jewellery?
The honest answer is that it depends entirely on what you want from the piece you are buying.
- If you are purchasing jewellery to mark something significant such as an anniversary, a milestone birthday, or a piece intended to be worn for years and potentially passed on, then solid gold is the only sensible choice.
- A piece meant to carry that kind of meaning should still look as good in twenty years as it did on the day it was given. Plated jewellery, by its nature, cannot promise that.
- If you are buying jewellery as a fashion piece to wear for a season or to pair with a specific outfit, plated jewellery may be a perfectly reasonable and considerably more affordable choice. The expectation in that case is different from the outset.
The problem arises when plated jewellery is sold or perceived as equivalent to solid gold, without the buyer understanding what they are actually purchasing. This is where trust in a jeweller becomes essential. It’s exactly why we believe in being completely transparent about what our jewellery is made from.
The Materials John Garland-Taylor Jewellery Uses
Every piece of jewellery we make is solid, being either 925 sterling silver or 9ct gold. Nothing in our collection is plated, hollow or coated. When you buy a JGT piece you are buying exactly what the description says all the way through.
This has been true since John Garland-Taylor first began making jewellery, drawing on skills originally developed restoring armour for Warwick Castle and the National Trust. That background gave him an exact understanding of metal, structure and longevity. This knowledge has shaped every piece our workshop has produced since.
Every piece we make also carries the GT maker's mark, originally developed to distinguish the armour pieces John restored and produced over the years. It remains on our jewellery today as a small but meaningful signal of the craftsmanship behind it.
We choose to work exclusively in 9ct gold rather than 18ct because, for the jewellery we make, we believe it should be worn often rather than reserved for rare occasions. It is jewellery designed to be lived in, not simply admired.
What to Look For When You're Buying
- Always ask directly whether a piece is solid gold or plated before you buy. A reputable jeweller will tell you clearly and will not obscure the distinction in vague language.
- Look for a hallmark on solid gold pieces. In the UK, genuine gold jewellery over a certain weight is required by law to carry a hallmark indicating its purity. This is one of the most reliable ways to verify exactly what you are buying.
- Be cautious of pricing that seems too good for what is described as solid gold. Gold has a real material cost and pricing that sits far below the market rate for the stated carat is one of the clearest signals that something does not add up.
If you are buying a piece intended to last, solid gold is worth the investment it represents.
What to Do Next
Every piece in our collection is made from solid 925 sterling silver or 9ct gold, hallmarked and handmade in our Warwickshire workshop. There is no plating, no hollow construction and no ambiguity about what you are buying.
If you have any questions about the metal, the hallmark or anything else about a piece you are considering, our team is always happy to talk it through honestly before you buy.
