In the studio we hear one question more often than any other: why 14K gold-filled and not simply gold-plated? Both look the same on the first day. The difference is not in the color, it is in the layer.
Gold-plated means a piece of brass gets a wafer-thin skin of gold in a plating bath, usually between half and two and a half thousandths of a millimeter. That is less than a tenth of a hair. Where the chain rubs, this skin lasts only a few months: at the clasp, on the edges and where the pendant slides.
Gold-filled means a layer of 14-karat gold is bonded firmly to the core under heat and pressure. Under the standard of the US Federal Trade Commission (FTC), which the industry follows worldwide, it makes up at least one-twentieth of the total weight, five percent. That is many times more gold than in ordinary plating. The layer is not applied on top, it is rolled on.
Three ways to a golden necklace
Plating is measured in micrometers, gold-filled in percent of the weight, solid gold in karats. In the studio we work with the middle one: 14K gold-filled, because it keeps its golden tone for years and is still affordable.
“Gold plating is a promise for the first summer. Gold-filled is one for many summers.”
I. Gold-filled or gold-plated: two cross sections, one difference.
Both necklaces have a brass core, which is no secret and no flaw. Brass is sturdy, can be drawn very fine and keeps the necklace affordable. The difference is the skin on top. With plating it is so thin that every contact with skin, fabric and clasp wears gold away, atom by atom. After one winter under a sweater the brass shows through at the edges.
With gold-filled there is so much gold on the core that rubbing does not reach the color underneath. The layer can turn more matte and get fine scratches. With normal wear it still lasts for years and stays golden. That is why we never say “gold-plated” in the studio when we mean gold-filled. They are two different materials.
II. What 14K means in the layer.
The gold layer of our necklaces is 14 karat, which means 585 parts per thousand of gold. The rest of the alloy is silver and copper. Pure gold would be too soft for a necklace you wear every day. 14K is the point where the tone is still warm and the layer is hard enough for everyday life.
This also explains why 14K gold-filled is not as yellow as a 24-karat bar. The tone is calmer and a little lighter, and it suits the stones we set: the violet of amethyst, the light blue of aquamarine, the white of the cultured freshwater pearl.
585 is not a compromise. The layer has the same gold content as many wedding rings.
Gold content by karat
Karats divide the gold content into 24 steps: 24K is pure gold, 14K is 14 of 24 parts. As an alloy this is called 585, which means 58.5 percent gold. The layer of our gold-filled necklaces has exactly this share.
III. What the layer withstands in everyday life.
Rubbing at the clasp and edges
Same movement, same spots: with plating the core shows after a few months. With 14K gold-filled the layer only softens in shine over the years.
Rubbing is the quiet enemy of every necklace. The pendant slides over the links, the clasp turns at the back of the neck, the collar chafes. Plating gives way at exactly these spots first. Gold-filled holds there, because the layer is thick enough to take years of rubbing.
Our necklaces are water-resistant, in silver as well as in gold. You can wear them while washing your hands and in the shower. Take off pearl and malachite pieces beforehand. After the sea or the pool, rinse them with clear water and dry them, because salt and chlorine attack many metals over time. Perfume and lotion go on your skin first, the necklace afterward.
The price is honest too: the same necklace costs €30 more in 14K gold-filled than in 925 sterling silver, at 45 cm (17.7 in) from €149 instead of from €119. That is the price of the gold layer, not of a name.
IV. Numbers you will not find on any label.
Price of the same necklace in the studio
Gold layer compared
0.5 to 2.5 µm
Gold-plated
Wears off at edges and clasp
2.5 µm
Vermeil
Gold plating on silver, thicker, but still a coating
5%
14K gold-filled
Rolled-on 585 gold layer, our standard
Why it matters in the studio
Four things we do not compromise on with gold.
01
14K gold-filled, never gold-plated.
Every gold necklace we make carries a rolled-on 585 layer. We never call it gold-plated, because it is not.
02
925 sterling silver as the alternative.
If you prefer silver, you get the same piece in 925 silver. Same chain, same stone, €30 less at 45 cm.
03
Water-resistant in both metals.
Washing hands, showering, rain: no problem. Rinse after salt water and chlorine, and the tone stays.
04
Openly declared.
Every product page tells you what you get: metal, stone treatment, origin. None of it is small print.
The next time you hold a gold necklace in your hand, turn the clasp between your fingers and look at the edges. That is where you can tell whether a piece carries gold or only shows gold.
Gold-plated is a color. Gold-filled is a material.
Carola
All necklaces are available in 925 sterling silver and 14K gold-filled.
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