How Hemmerle Revolutionized Diamond Jewelry by Breaking Every Rule
From pioneering the use of iron and aluminum in high jewelry to championing brown diamonds decades before the market caught on, the Hemmerles have built a singular aesthetic—one rooted in restraint, innovation, and craft.
Hemmerle ring, Fancy Vivid Yellow diamond weighing over 6.2 ct., set in bronze, aluminum, and an inner band of yellow gold. (Courtesy of Hemmerle)
Walking into Hemmerle’s sunlit Munich gallery, with soaring windows and a balcony overlooking Maximilianstrasse, the atmosphere feels less like a boutique than a private residence. Sculptural furnishings sit alongside contemporary art and natural materials—oak herringbone floors, a travertine fireplace—each element composed to create a sense of calm.
“The space is our universe,” Yasmin Hemmerle tells Only Natural Diamonds. “It’s the language that we speak and live.”
After more than a century in a street-level storefront on the same street, the fourth-generation jewelers moved last year to this more intimate upstairs setting. Yasmin and her husband, Christian, selected every detail themselves, though the brand’s heritage remains quietly embedded throughout. Even the concealed bar carries a piece of the house’s history: its structure is built from the doors of Hemmerle’s original safe, installed in 1915.
Meet the Expert
- Jill Newman is a jewelry authority, editor, and storyteller with over 25 years of experience, having reported from diamond mines in Africa, cutting workshops in India and Belgium, and ateliers around the world.
- She serves as Editor-at-Large for the Natural Diamond Council, with additional bylines in The New York Times, Town & Country, Elle Décor, and Robb Report.
Here, the couple hosts leisurely visits with clients. Jewels are displayed sparingly; the intention is first to immerse visitors in Hemmerle’s aesthetic world, before introducing the jewels themselves. The experience feels personal—more conversation than commerce. For Yasmin and Christian, who took over leadership of the family firm in 2021, the gallery marks their chapter in the brand’s evolution. Yet its restrained elegance remains closely aligned with the minimalist sensibility established by Christian’s father, Stefan Hemmerle.
The Defining Aesthetic of Hemmerle
It was Stefan who boldly moved the business in a new direction in the 1990s. Faced with a client who preferred a discreet diamond ring rather than a traditional gold setting, he mounted the stone in iron. “That was the icebreaker,” Christian recalls. “It took away every inhibition, every fear. Suddenly, we felt free to do things we thought we couldn’t do before.”
The moment proved transformative. Hemmerle began to explore unconventional materials—aluminum, copper, bronze, iron, and wood—paired with exceptional gemstones and diamonds. Scale became bolder, forms more sculptural, yet the overall effect remained understated.
Long before “quiet luxury” became a marketing phrase, Hemmerle had already mastered it. Today, the house is instantly recognizable for its alchemy of materials: humble metals finished to a velvety softness, ancient artifacts transformed into contemporary jewels, and unusual stones chosen for nuance rather than spectacle. “One of our greatest achievements as a company,” says Christian, “is that our pieces are recognizable as Hemmerle.”
Among the most enduring designs is the Harmony bangle, an open-ended bracelet with a twist clasp devised by Stefan in 1991 and reinterpreted in countless variations since. Yasmin has worn her own version—olive wood with brown diamonds—for two decades. “It gives me the same joy today as the day I received it,” she says.
“The space is our universe. It’s the language that we speak and live.
The design process is collaborative, involving the couple and a close-knit group of master craftsmen, some of whom have worked with the family for decades. Often, the starting point is a stone, with metals selected almost instinctively—whether a gem might glow best against green gold or tinted aluminum.
The result is a balance of bold geometry softened through color, finish, and texture. A warm 10-carat brown-yellow diamond is set in a sculpted bronze ring; a pair of dreamy aquamarines totaling nearly 50 carats are cradled in vivid blue aluminum earrings; pear-shaped diamond earrings, over 18 carats combined, wrapped in lines of bronze crisscrossing the stones.
Despite its defining aesthetic, the Hemmerles avoid repeating a single motif. Inspiration comes from the natural world—acorn-like forms surrounding natural pearls, or aluminum flowers set with vibrant tanzanite or diamonds—as well as from art, architecture, and graphic forms.
Hemmerle Was Decades Ahead With Brown Diamonds
Stefan Hemmerle embraced brown and subtly tinted diamonds decades earlier when most collectors overlooked them. Today, such stones are widely appreciated for their warmth and individuality. “He wanted jewelry that wasn’t flashy,” says Christian. “In many ways, he was ahead of his time.”
For Stefan, brown diamonds offered something quieter and more versatile. “Brown is simply a beautiful complementary color,” Christian explains. “It’s neutral. It goes with everything and doesn’t scream.”
The house has also long favored antique stones, particularly old-cut diamonds with irregular proportions and softer brilliance. “They have an energy,” Christian says. “I buy stones for the quality of the material, not because they’re fashionable. I want our clients to wear them today—and in 10, 20, 30 years.”
Even large diamonds appear restrained when framed in Hemmerle’s darkened metals, like an old cushion-cut diamond set flush within blackened aluminum with a discreet gold inner band. Christian still recalls the most important advice his father gave him: “Don’t look left, don’t look right. Just do what feels right.”
A Family Legacy
It’s a weighty responsibility, taking charge of the family business, founded in 1893 by brothers Anton and Joseph Hemmerle, who were making iron jewelry and adornments for the Bavarian court. Christian and Yasmin joined the business in 2006, eventually taking over from their parents, Stefan and Sylveli, in 2021.
The previous generation had already built a strong international following, particularly in the United States, where they began exhibiting more than three decades ago in Palm Beach and New York. Today, the brand maintains a by-appointment showroom in New York, a seasonal boutique in Palm Beach, and presents collections in Aspen, Hong Kong, and beyond. Hemmerle is also a longtime exhibitor at leading art and design fairs, including TEFAF and PAD.
Yet Munich remains at the heart of the business, a place where they can share their story and vision with clients. In the first year since opening the gallery, collectors from around the world have visited. For Christian, the space allows the family to focus on what matters most: time, conversation, and discovery.
“We are distinguishing ourselves in our new space,” explains Christian. “The space allows us to focus on our collectors and to give them the time to discover our world. Jewelry is deeply personal, so we wanted an intimate experience.”
A short walk away is the workshop, where the Hemmerles are frequently found collaborating with their craftsmen. “We don’t dictate how things should be done,” Christian says. “Ideas are shared. There is time to experiment.” A single jewel can take months or even nearly a year to complete. But they are never in a rush, because, as Christian says, the process is part of the journey of discovery.
That long-term mindset reflects the family’s perspective on the business itself. After more than 130 years, every jewel is still made by hand, and every decision is taken with the future in mind. “We’re doing this because this is our life,” Yasmin says. “And we’re very lucky that we get to do it together.”
