Jessica McCormack

Founder and Creative Director, Jessica McCormack

Jessica McCormack is the founder and creative director of her eponymous fine jewellery house, established in London in 2008. Raised in New Zealand, she grew up between dramatic landscapes and her family’s antiques and art business, an upbringing that shaped her eye and her belief that beautiful objects should be enjoyed every day rather than reserved for special occasions. That philosophy, known as Day Diamonds, underpins a modern heritage house that combines extraordinary gemstones, traditional goldsmithing and a design sensibility that is both elegant and relaxed. Craftsmanship remains central to the business, with an in-house workshop inside the brand’s Mayfair townhouse flagship on Carlos Place. The house opened its first international store on Madison Avenue in New York in 2025, followed by a second US location at South Coast Plaza in 2026, and has built a loyal following among celebrities, collectors and entrepreneurs.