I’ll be honest: I am getting sick of hearing about “waterproof gold” and “PVD gold.” They’re everywhere, and I worry about how many people see those words and think they’re buying a piece made of gold.
I stop in disbelief at Amazon listings advertising “14k gold” jewelry for a few dollars. To me, that’s like seeing a brand-new car advertised for $1,000. Before getting excited about the bargain, I want to know what I’m actually being offered.
Then I keep reading. Somewhere between the title, the bullet points, and the description, the item morphs from “14k gold” to “gold plated over brass” to “gold filled.” All in the same listing. As if those terms are interchangeable!
It’s like treating unleaded gasoline, diesel, leaded gasoline, and even butane as interchangeable because somebody calls it all “gas.” They’re all fuels, but you wouldn’t just put any one of them in your car. The details matter.
They matter in jewelry, too. Most people haven’t spent years learning about metals and coatings. They should be able to trust a description without having to become a jewelry detective.
We’ve been working with beads and jewelry supplies at The Bead Gallery since 1997, and even I have to stop and untangle some of these listings. So here’s my little rant, with a useful guide attached. Let’s make these words mean something.
Three things a jewelry description can tell you
Karat tells you the purity of a gold alloy. Plated, filled, and vermeil describe how gold is incorporated into a piece. Yellow, rose, and white describe its color.
These details work together. “14k rose gold filled,” for example, tells you the gold layer’s purity, its color, and the construction. “Gold-colored” only tells you how something looks.
And “real gold” needs a little explaining, too. Gold-plated and gold-filled pieces can contain real gold. We need to know where that gold is, how much is there, and what’s underneath it. A real-gold surface does not mean the whole piece is made of that gold alloy.
What do 10k, 14k, 18k, and 24k mean?
Karat measures gold in 24 parts. Here’s the proportion of gold in each alloy:
| Karat | Gold content |
|---|---|
| 10k | About 41.7% |
| 14k | About 58.3% |
| 18k | 75% |
| 22k | About 91.7% |
| 24k | Pure gold |
Pure gold is soft, so jewelry makers mix it with other metals for strength and different colors. A higher karat means more gold; it does not automatically mean a piece will resist scratches better. FTC gold jewelry guide
On a plated piece, the karat describes the gold coating. An 18k gold-plated pendant and an 18k gold pendant have very different constructions. That little word “plated” is doing a lot of work! It belongs right there in the description, where you can see it.
P.S. Karat with a K tells you gold purity; carat with a C measures gemstone weight. One carat equals 0.2 grams. Same sound, different job!
Gold jewelry: a quick comparison
| Description | What it means | What to keep in mind |
|---|---|---|
| Karat gold throughout | The metal is the stated gold alloy throughout, rather than a gold layer over a different core. | Hollow gold jewelry also exists; ask about construction. “Solid” should not describe a hollow piece. |
| Gold filled | A karat-gold layer mechanically bonded to another metal. | U.S. guidance allows “gold filled” at a minimum 1/20 of total metal weight in the gold-alloy layer. |
| Gold vermeil | Gold plated over sterling silver, meeting specific purity and coating requirements. | Gold over silver alone does not automatically qualify. |
| Gold plated | A surface layer of actual gold or gold alloy over another metal. | Thickness, base metal, and wear affect longevity. |
| Gold flash / gold wash | A very thin gold coating. | Expect less resistance to wear than a substantial gold coating. |
| Gold-colored PVD | A gold-toned coating applied using a vacuum process. | It may contain real gold—or use other compounds to create the color. |
| Hamilton gold | A trade term for a yellow-gold color or finish. | Ask for the base metal and coating specifications; the name alone does not establish gold content. |
A common gold-filled marking is 1/20 14K GF. The 5% refers to the weight of the 14k gold alloy layer, not 5% pure gold. FTC guidance on gold descriptions
Under U.S. guidance, vermeil uses sterling silver with gold of at least 10k on all significant surfaces, reasonably durable and at a minimum thickness equivalent to 2.5 microns of fine gold. That wording accounts for purity as well as thickness. A micron is one-thousandth of a millimeter. FTC guidance on vermeil
What about Hamilton gold?
“Hamilton gold” is another term worth slowing down for. In jewelry descriptions, it usually refers to a yellow-gold color or finish. The name comes from the color of plating on Hamilton watch cases, and the shade can vary between suppliers. Research on jewelry alloy colors
The word “Hamilton” is not a karat rating. Some Hamilton finishes use actual gold, but the name alone does not tell you the base metal, the coating’s composition or thickness, or whether a piece is gold filled or karat gold throughout.
So if a listing says only “Hamilton gold,” I still want the rest of the sentence! What is underneath that finish? What is the coating made of? How should I care for it? It can be a lovely color, but shoppers deserve the material details, too.
What is PVD?
PVD stands for physical vapor deposition. It applies a thin coating in a vacuum. It describes the application process, so you still need to know what the coating and underlying metal are.
Some gold-toned PVD coatings use hard compounds such as titanium nitride or zirconium nitride to create the color. Other systems include a real-gold surface layer. Even “18k gold color” can refer to a shade rather than actual 18k gold.
Well-made PVD finishes can offer good wear resistance. Their performance depends on coating composition, thickness, surface preparation, and use. Abrasion can still damage them. PVD coating manufacturer LEM explains the process
This is why seeing “PVD” in a listing doesn’t settle the question for me. I still want to know what was put on the surface and what’s underneath. A gold-colored finish can be attractive, durable, and useful without containing gold. Just tell me what it is so I can decide whether it’s what I want.
Is “waterproof” jewelry really waterproof?
“Waterproof” sounds so reassuring, especially here in Hawaiʻi. But it tells me nothing about how much gold is in a piece. It also leaves out the details of what kind of water exposure the jewelry can handle.
Ask what the seller means: occasional splashes, daily showers, swimming, or repeated exposure to saltwater? Ask what testing supports the claim and what the warranty covers. Those are different situations, and a single word does not explain them.
Water exposure, tarnishing, scratches, and coating wear are different issues. A piece might tolerate splashes well but gradually lose color where it rubs against other surfaces.
Even gold alloys can be damaged by chlorine bleach. Pearls and other delicate gems can also be harmed by chemicals in everyday products. GIA jewelry care tips
The metal is only one part of your jewelry. Pearls, stones, glue, stringing materials, and clasps need their own care, too.
As bead lovers, this is the part we need to remember: putting a water-resistant clasp on a pearl bracelet doesn’t give the pearls, string, or knots the same properties. For pieces you make, choose care instructions that suit the most delicate component.
Yellow, rose, and white gold
Yellow gold alloys retain gold’s familiar warm yellow color. Rose gold gets its pinkish tone largely from copper in the alloy. White gold mixes gold with metals such as palladium or nickel and is often rhodium plated for a brighter white finish. That rhodium surface may need renewing over time. GIA explains white gold
At the same karat, these alloys have the same proportion of gold, even though their colors differ. A rose-gold-colored coating, however, may achieve its color through a different chemistry.
For more about our favorite pink tones, read What Makes Rose Gold Pink?
What would we look for when shopping?
- The base metal: What is underneath the finish?
- The coating: Actual karat gold, or a gold-colored compound?
- The specifications: What thickness or gold-alloy weight is stated?
- The care instructions: What can you realistically do while wearing it?
- The whole piece: How are the clasp, connections, and other components made?
Gold content and durability are separate qualities. There is no universal ranking that tells us every PVD piece will outlast every plated, vermeil, or gold-filled piece.
Our practical approach is to enjoy your jewelry and give it a little care: remove it before swimming and handling harsh cleaners, wipe it gently after wear, and follow instructions for its particular materials. Use a plain soft cloth on coated surfaces; polishing compounds and abrasive cloths can remove a finish.
If I’m buying gold-plated brass, tell me it’s gold-plated brass. If I’m buying gold filled, tell me the gold quality and construction. If it’s stainless steel with a gold-colored PVD finish, say that. Then let me decide what works for my budget and my project.
We put time, thought, and love into the things we make. We deserve to know what we’re making them with. And when someone buys a piece of jewelry, they deserve a description that means the same thing from the top of the listing to the bottom.
LIVE. LOVE. CREATE.