Episode Details

This episode of The Materialist is a little different.

Usually, we talk with designers, tastemakers, collectors, and creators about the objects they love: the jewelry they wear, the pieces they make, the things they choose to bring into their lives. This conversation is about jewelry, but it is not really about looking at jewelry. In fact, Rob Bates says at one point, “I don’t really like looking at jewelry. It has no interest to me. And I’ve written about jewelry for 35 years.”

That may be the perfect way into Rob’s particular genius.

For decades, Rob has been one of the defining journalistic voices of the jewelry industry. As longtime news editor of JCK, and before that at National Jeweler, he has covered diamonds, retailers, trade shows, controversies, crises, consolidations, family businesses, lab-grown diamonds, conflict diamonds, tariffs, marketing campaigns, and all the strange, intimate, global machinery that sits behind a ring in a case.

What has kept him interested is not jewelry as decoration, but jewelry as a window into how the world works. From Rob’s perspective, the industry is a small town and a global system at once: family businesses and multinational companies, romance and commerce, ethics and marketing, gemstones and geopolitics. It touches “so many people, so many countries, so many lives,” as he puts it. Jewelry, in Rob’s telling, is not merely an accessory category. It is an industry where questions of value, truth, labor, status, love, responsibility, and storytelling all collide.

That journalistic distance makes this a different kind of Materialist episode. Rob is not especially interested in whether a piece is pretty. He is interested in what it reveals. A diamond is never just a diamond. It is a product, a symbol, a commodity, a brand, a promise, a controversy, a livelihood, and sometimes a problem. The same object can represent romance in one context, extraction in another, national development in another, and market disruption in yet another.

Much of the conversation circles around lab-grown diamonds, which Rob identifies as the biggest issue facing the industry today. His analysis is characteristically unsentimental: lab-grown diamonds succeeded not because they invented a radically new use case, but because they inserted themselves into an existing emotional and commercial structure. The mined diamond industry had spent decades building demand. Lab-grown companies arrived and said, in effect: this is the same thing, only cheaper. And, as Rob says, “nothing beats cheaper.”

But Rob is also clear that the conflict between natural and lab-grown diamonds has become less productive than it should be. The two sides “take shots at each other constantly,” even though “both things can coexist.” His deeper critique is that the diamond industry trained consumers to compare numbers and letters rather than meaning, beauty, design, or brand. Once diamonds became a grid of specifications, it became easier for consumers to comparison shop — and easier for lab-grown diamonds to compete on price.

That idea opens into one of the richer themes of the episode: what makes something “real”? Rob’s novels have returned to that question, and the jewelry industry seems almost designed to keep asking it. Is a lab-grown diamond real? Is a mined diamond more meaningful because it came from the earth? Is value created by scarcity, cost, emotion, advertising, history, or use? Rob does not pretend to resolve all of this neatly. “Everything is real,” he says. What matters, in the end, may be the human impact: what kind of person you are, what effect you have on your family, and what effect you have on other people.

The conversation also turns to the moral complexity of diamonds. Rob notes that diamonds have been associated with terrible things, but also that, at their best, they have provided jobs and helped build prosperity in places like