Jessica McCormack’s Antique-Modern Diamonds Win Celebrity and Global Fans

Jessica McCormack has turned diamonds into a wardrobe language, not a dress-code requirement. When Rihanna and Zoë Kravitz wear the label, the effect is immediate: the jewelry reads less like ceremonial status and more like a sharp, personal finishing touch, the kind that can sit with denim, a tuxedo jacket, or a slip dress and still feel entirely current.

What makes the brand distinctive is the tension at its core. Jessica McCormack founded the label in 2008 after beginning her career in the jewellery department at Sotheby’s, and her aesthetic was shaped by growing up in New Zealand around art and antiquities collected by her father, an auctioneer. That background still defines the work: antique references are filtered through a contemporary eye, so the pieces feel collected, not costume, and precious, not stiff.

The antique-modern code

McCormack’s design language is built around contrast. The brand says it blends antique and contemporary influences, and that idea shows up in the way the jewelry balances old-world romance with a cleaner, more modern attitude. The goal is not to imitate vintage jewelry, but to make pieces that feel like future heirlooms, objects with enough character to be passed down and enough ease to be worn now.

The signature collections help explain the formula. Button Back, Ball n Chain, Day Diamonds, Rush Hour, and Orbit each suggest a different facet of the brand’s personality, from the quiet utility implied by Day Diamonds to the more sculptural rhythm of Orbit. Together they form a line-up that feels less like a wedding-only suite and more like a wardrobe of diamond accents, designed to be mixed into everyday dressing.

How the cool-girl effect was built

The celebrity appeal is not accidental, and it is not just about red carpet sparkle. Rihanna gives the brand immediate fashion authority, while Zoë Kravitz supplies the exact kind of laid-back, sharp-edged credibility luxury labels now chase. In 2024, Kravitz became Jessica McCormack’s first brand ambassador and muse, a move that aligned neatly with the company’s U.S. expansion and reinforced the sense that the label belongs to a younger, more style-conscious luxury customer.

That recognition matters because McCormack’s jewelry is not trying to behave like traditional fine jewelry, where the message is often formality first and personality second. Instead, the brand’s cool factor comes from how the pieces are styled and perceived: as accents that can interrupt an outfit, not overwhelm it. Sienna Miller, Charlize Theron, and Rosie Huntington-Whiteley have also been linked with the label, strengthening the sense that McCormack occupies the space where celebrity dressing meets real-world wearability.

The stores deepen that idea. McCormack has described them as more like homes than traditional retail spaces, filled with art, antiques, and bespoke furnishings that echo the jewelry’s antique-meets-modern identity. That is a subtle but powerful move, because it makes the brand feel curated rather than commercial, like stepping into a collector’s apartment rather than a luxury showroom.

Why the pricing signals status differently

The price positioning is part of the transformation. With pieces ranging from the thousands into six figures, Jessica McCormack sits firmly in luxury fine jewelry, but the tone is different from the old guard. Cartier and Tiffany & Co. remain useful benchmarks for heritage and scale, yet McCormack’s appeal comes from making diamonds feel less like locked-away assets and more like wearable fashion objects with emotional texture.

That matters in 2026, when many luxury customers want proof that a piece is versatile, not just expensive. McCormack’s model answers that demand through design and intent: the brand says its jewelry is meant to become heirlooms for future generations, but it is styled and presented in a way that feels immediate, current, and easy to integrate into daily life. The result is a rare combination, prestige without stiffness.

The business behind the polish

The numbers show that the aesthetic shift has become a commercial one. Turnover rose from £28 million in 2023 to £36 million in 2024, and the brand had more than tripled from £9 million in 2020 to over £30 million by 2024. Sales were also up 60 percent in 2025, a pace that explains why the label has moved from cult favorite to serious global player.

Investment has followed the momentum. Lingotto Horizon, owned by the Agnelli family’s Exor holding, took a substantial minority stake as the company prepared an international rollout. That kind of backing signals confidence not just in product, but in the brand’s ability to scale its identity without losing the intimacy that makes it special. Few jewelry labels manage that balance, especially while moving from a founder-led following to a broader luxury audience.

The store rollout tells the story

The retail expansion is just as revealing as the celebrity list. In May 2025, Jessica McCormack opened a Madison Avenue flagship at 743 Madison Avenue, inside a Beaux-Arts building established in 1879, a location that says as much about the brand’s taste level as any campaign could. The New York opening was followed by a second London store on Sloane Street, joining the Carlos Place Mayfair townhouse flagship and confirming that the company is building a multi-city identity rather than a single-flagship halo.

The next moves are even more telling. A South Coast Plaza store is planned for summer 2026, and a Rodeo Drive flagship is also in the pipeline. Add in the company’s store directory, which lists Harrods and Simon James, and the picture becomes clear: this is not a niche London jewel box anymore, but a selective luxury network with the reach to meet customers where they already shop.

Jessica McCormack’s rise shows how diamonds become fashionable again when they stop behaving like museum pieces. By fusing antique references with a modern eye, pricing itself as true luxury, and placing the brand in the hands of women who set the style mood rather than follow it, McCormack has made fine jewelry feel intimate, wearable, and unmistakably cool.