John Hardy Unveils Sustainable Diamond Collection with Billie Eilish and Finneas

NEW YORK, NY — John Hardy has launched its new Lovestruck collection, marking a significant milestone as the jewelry brand celebrates its 50th anniversary. The collection centers on lab-grown diamonds and features collaborations with Grammy-winning siblings Billie Eilish and Finneas O’Connell.

Available as of September 29, 2025, Lovestruck showcases four proprietary diamond cuts designed by the brand’s creative chairman, Reed Krakoff. These diamonds are set in reclaimed precious metals and crafted using 100 percent renewable energy.

“I love that Lovestruck uses lab-grown diamonds, reclaimed precious metals, and each piece was crafted using renewable energy,” Eilish stated. “What you eat, say, and wear matters, and jewelry is no different. It all impacts our planet.”

O’Connell echoed her sentiments, describing the pieces as “intentional yet imperfect — diamonds with form and feeling, and without pretension.” This collaboration also emphasizes a commitment to sustainability, with a pledge to support philanthropic efforts, including the non-profit organization Support+Feed, which addresses climate change and promotes plant-based food.

The collection represents a shift in luxury jewelry, offering accessible designs with price points ranging from $825 to $24,000. The emphasis on lab-grown diamonds reflects a broader trend, as the market share for these gems has significantly increased in recent years.

“Lovestruck represents a comprehensive rethink of what diamonds can be going forward and how we can make a difference in a space with a lot of sameness,” Krakoff stated. The collection aims to blend artistry and sustainability while presenting diamonds in a more casual and accessible light.

John Hardy has seen a renewed interest in its offerings, with wholesale sales up by more than 50 percent. As the brand moves forward, it seeks to redefine how consumers view luxury through sustainable practices and innovative designs.