Solid gold is gold all the way through, in 10K, 14K, or 18K purity, and it lasts indefinitely. Gold plated is a base metal with a layer of gold thinner than a human hair, and it wears through in months to a couple of years. Gold filled sits between those two. If a piece is going to be worn daily for years, buy solid. If it's a trend piece or a one-season look, plated is fine as long as you know that's what you're buying.
Quick answer
- Solid gold (10K, 14K, 18K): gold alloy throughout, lasts a lifetime, can be repaired and resold by weight. Stamped 10K/417, 14K/585, 18K/750.
- Gold filled: thick gold layer bonded to brass, at least 5 percent of weight. Lasts many years. Stamped GF.
- Gold plated: a very thin gold layer over brass or steel. Lasts months to a couple of years. Stamped GP, GEP, HGE, or not at all.
- Buy solid gold for anything worn daily or anything holding diamonds.
Solid Gold vs Gold Filled vs Gold Plated: Side by Side
| Solid gold | Gold filled | Gold plated | |
|---|---|---|---|
| What it is | Gold alloy throughout | Thick gold layer bonded to brass (5% of weight minimum) | Thin gold layer over brass, copper, or steel |
| How long it lasts | Lifetime; can be repaired, resized, re-polished forever | Many years with care | Months to a couple of years |
| Can it be repaired? | Yes, fully | Limited | Can be re-plated, often for more than the piece is worth |
| Tarnishes / turns skin green? | No | Rarely | Yes, once the layer wears |
| Stamps to look for | 10K, 14K, 18K, 417, 585, 750 | GF, 1/20 14K GF | GP, GEP, HGE, or nothing |
| Resale value | Yes, by gold weight | Minimal | None |
What Do 10K, 14K, and 18K Gold Mean?
Pure gold is 24 karat and too soft for jewelry; it bends and scratches with a fingernail. So it's alloyed with other metals (copper, silver, zinc, nickel, palladium) for strength and color. The karat number tells you how much gold is in the mix.
- 10K: 41.7% gold. The hardest and most affordable solid gold legally sold as gold in the US. Slightly paler in color. Great for chains and rings that take daily abuse. Many of our rope chains come in 10K.
- 14K: 58.3% gold. The standard for fine jewelry in the US. Rich color, very durable, holds stones well. Most of our diamond jewelry and engagement rings are 14K.
- 18K: 75% gold. Deeper, warmer color. Softer and scratches more easily. Costs more by weight. Our 18K Cuban chains are where the richer color is worth it.
- Below 10K (8K, 9K): Cannot legally be sold as "gold" in the US. Common in Europe and in imports.
Look for the stamp: 10K / 417, 14K / 585, 18K / 750. On a chain it's on the clasp or the tag near the clasp. On a ring it's inside the band. No stamp means assume plated until proven otherwise.
What's the Difference Between Solid and Hollow Gold?
This confuses people. A "hollow" gold chain is still solid gold, meaning it's gold alloy all the way through. But the links are tubes rather than solid wire, so the chain weighs less and costs less.
Hollow chains look identical from the outside. The trade-offs: they dent if crushed, they're harder to repair because a broken hollow link can't be easily soldered, and they feel lighter. For a chain worn occasionally, hollow is a smart way to get the look for less. For daily wear, solid is worth the difference. We sell both and label them: compare our solid Cuban chains to the hollow Cuban chains.
What Is Gold Plated Jewelry, Really?
Gold plating is done by electroplating: the piece is dipped in a solution and an electric current deposits a microscopically thin layer of gold onto it. That layer wears through from friction with skin and clothing, and it wears fastest on the parts that touch you: the inside of a ring, the back of a chain, the clasp.
When the layer wears through, the base metal (usually brass or copper) is exposed. Brass and copper react with sweat and oxidize, which is what turns skin green. It's not an allergy, it's chemistry.
None of this makes plated jewelry bad. It makes it fashion jewelry. An inexpensive plated chain for one summer is a fine purchase. An expensive plated chain sold as "gold" is a scam. Price and honesty are the difference.
How to spot it: No karat stamp, or stamps like GP (gold plated), GEP (gold electroplated), HGE (heavy gold electroplate), or "18K gold plated" (which means 18K-colored plating, not 18K gold). A price that's too low for the weight. A magnet: solid gold isn't magnetic, and while brass isn't either, steel-based plated pieces are.
What Is Gold Filled?
Gold filled is a thick sheet of gold mechanically bonded to a brass core under heat and pressure. By law the gold has to be at least 5 percent of the piece's weight, which is many times thicker than plating. It wears well, doesn't turn skin green, and is a reasonable choice if you want a daily-wear piece without paying for solid gold. The catch is it can't be resized or repaired well, and it has almost no resale value.
Which Type of Gold Should You Buy?
- Buy solid gold for: Anything worn daily. Anything with diamonds or stones in it (a real diamond in a plated setting is a real diamond in a throwaway setting). Anything you'd want to repair, resize, or pass down. Chains, since they take the most friction. See our solid gold chains.
- Buy gold filled for: Daily-wear basics on a budget, like a simple chain or hoops, when you can't swing solid.
- Buy plated for: Trend pieces, one-season looks, travel jewelry, costume. Keep it cheap and don't expect it to last.
How Do You Tell If Gold Is Real?
- Find the stamp. Clasp, tag, or inside the band. 10K/14K/18K or 417/585/750 means solid. GP/GEP/HGE means plated. GF means filled.
- Check the wear points. Look at the inside of a ring or the back of a chain where it rubs. If you see a different color showing through (silver, copper, brass), it's plated.
- Weigh it. Gold is dense. A solid 14K chain feels heavier than it looks. Plated brass feels light.
- Magnet test. Gold isn't magnetic. If it sticks, it's plated steel. (If it doesn't stick, it could still be plated brass, so this only rules things in, not out.)
- Bring it to a jeweler. An acid test or an XRF reading takes two minutes and gives you a definitive answer and the karat.
Frequently Asked Questions
Is gold plated jewelry real gold?
The thin outer layer is real gold, but the piece is brass, copper, or steel underneath. It has no gold value and the layer wears off. It's fashion jewelry, not fine jewelry.
How long does gold plated jewelry last?
A few months to a couple of years with regular wear. Rings and chains wear fastest because of friction. Pieces worn occasionally can last longer.
What does 14K mean?
14 parts gold out of 24, or 58.3 percent pure gold. It's the standard for fine jewelry in the US because it balances color, durability, and cost. It's stamped 14K or 585.
Does solid gold tarnish?
No. 10K and 14K can dull slightly over years from the alloy metals, but a polish brings them back. Gold itself doesn't react with air or skin.
Is gold filled better than gold plated?
Yes, significantly. Gold filled has far more gold, bonded under pressure rather than electroplated, and lasts years instead of months.
Is 10K gold good quality?
Yes. It's solid gold, it's the hardest karat, and it's the best value for chains and daily-wear rings. It's slightly paler than 14K. It is real gold and will last a lifetime.
Buy It Once
A solid gold chain bought once lasts longer than ten plated ones bought over the same years, and costs less in total. Browse solid gold chains, or bring us what you own and we'll tell you what it is.
