On Gold

A note from Catherine on why we set our pieces in 10-karat gold — and why the industry has been quiet about its advantages.

10-karat is the strongest everyday gold.

Most fine jewelry is made in 14-karat or 18-karat gold, and most customers have been taught that higher karat means better. It doesn't. It means softer.

Pure 24-karat gold is beautiful and almost useless for jewelry you actually wear. It bends against a fingernail. It dents from a counter edge. Every karat below 24 is an alloy — pure gold mixed with stronger metals to make the finished piece durable. The lower the karat number, the more alloy, the harder the surface.

10-karat gold is 41.7% pure gold, alloyed with copper, silver, and trace metals that give it its strength. It resists scratches, dents, and everyday wear better than 14k and meaningfully better than 18k. The tradeoff is a slightly paler, quieter color than 14k — which I happen to prefer.

10k has been doing serious work for over a century.

10-karat is not a new alloy. It was formally established as the United States minimum gold standard by the Gold Standard Act of 1900 — meaning 10k has been a recognized fine jewelry metal in this country for over a hundred and twenty-five years. Lower-karat alloys (9k, 12k, 15k) became legal for use in the UK in 1854 and have appeared in serious antique work ever since. The "lower-karat as lesser" bias is recent. The metal itself is not.

You can see this in any reputable antique case. Substantial turn-of-the-century pieces — heavy-set rings, brooches with serious diamonds, signets with genuine weight — were regularly made in 10k. They are not "mall jewelry." They are workmanship-forward objects in a lower-karat alloy, and there is a generation of them sitting in estates right now, holding up beautifully a hundred years later. Whatever bias the modern industry has built around 14k and 18k, the historical record shows that 10k has been carrying real fine jewelry for as long as anyone alive can remember.

What 10k makes possible.

Here is the part of the 10k argument the industry doesn't talk about. 10k does not just make a more durable ring. It makes a different kind of fine jewelry possible at a different kind of price.

The conventional fine jewelry house works in 18k. A pair of statement earrings at one of those houses, with serious natural stones and serious workmanship, lands at $30,000 or above. That price is reasonable for what it is. It is also out of reach for the vast majority of women who would absolutely buy a beautiful pair of statement earrings, given the option, but who are never going to spend $30,000 on earrings.

The 10k version of those earrings — same caliber of design, same caliber of stones (lab or natural, evaluated by me), same finish work — comes in at a meaningfully different price point. Not because the piece is a step down, but because the metal is a different choice with a different cost structure. The earrings are still fine jewelry. They are still made with care. They will still be worn for decades. They are simply available to a wider range of women, at a wider range of moments in those women's lives.

That accessibility isn't a value tier; it's the point of the metal. The fine jewelry industry's pricing has historically been calibrated for the gift purchase, with 18k as the floor — and the women who would have bought a piece for themselves, casually, because they wanted it, have been quietly priced out of the conversation. 10k brings them back into it.

I work in 10k for the durability. I also work in 10k because I want women to buy fine jewelry for themselves, and 10k is one of the levers that makes that possible.

On the color, and how it bridges a jewelry box.

One of the quiet pleasures of 10k yellow gold is its versatility. Because it has a lower percentage of pure gold than 14k or 18k, the color comes out softer and paler — less saturated than 14k yellow, less buttery than 18k. The practical effect is that 10k yellow plays beautifully against almost everything else a woman is likely to be wearing.

This is most useful as a styling tool. Most women's jewelry boxes are a mix of metals and karats — sterling silver from a teenage years stack, 14k yellow from a graduation gift, an 18k piece inherited from a grandmother, a piece of platinum with the engagement ring. The conventional advice has been to keep them separate: yellow with yellow, white with white, sterling on its own. That advice is increasingly out of step with how women actually wear their jewelry.

10k yellow gold is the alloy that makes the mix work. A 10k piece on the same finger as an 18k piece visually softens the jump in saturation between them. A 10k piece next to sterling reads warmer than a 14k would, but cooler than an 18k, which makes the sterling look intentional rather than accidental. Worn as a transition piece — a stack ring between a 14k band and a sterling cigar band, a chain that bridges a heavy 18k pendant and a delicate silver one — 10k is the metal that lets a woman wear what she already owns, in the combinations she actually wants, without anything looking like it doesn't belong.

Most fine jewelry conversations assume the piece will be the centerpiece of the outfit. In real life, jewelry is worn alongside other jewelry — much of it inherited, some of it bought across years, plenty of it in karats that don't match each other. A metal that styles all of it gets worn.

On white gold, specifically.

White gold in any karat is a yellow gold alloy mixed with white metals. Our formulation makes it the hardest practical white gold alloy available, which means it holds fancy-color stones more securely over time than higher-karat or palladium-based whites.

When we set a fancy vivid blue diamond or a fancy vivid green lab diamond, we set it in 10k white — both because the cool metal preserves the stone's color saturation and because the alloy is the least likely to deform under daily wear.

What this means for you.

A 10-karat ring from Catherine Peck is not a lesser version of a 14-karat or 18-karat ring. It is a different object, made with a different intention. It's designed to be worn daily — to the grocery store, to the gym, into the shower, to bed — and to look better five years from now than it did the day it arrived.

Every Catherine Peck piece is stamped 10k alongside our maker's mark. We don't hide the karat. We're proud of it.

One more thing, because it's something I find myself coming back to often. A piece of fine jewelry is not an investment in your portfolio. The gold price will do what it does, and a Catherine Peck ring is not going to save your retirement. What it can be is an investment in yourself — a piece you bought because you wanted it, that becomes part of how you move through your own life. That's the only kind of investment this house is interested in.

— Catherine