Ada Diamonds: The Global Architect of Bespoke Lab-Grown Diamond Luxury Founded in 2015 by Jason Payne and Lindsay Reinsmith and headquartered in San Francisco, California, Ada Diamonds (adadiamonds.com) is the premier high-tech luxury jeweler anchor for the lab-grown diamond sector. In April 2025, the brand was acquired by New York-based manufacturer Sasha Primak, merging Ada’s "Silicon Valley" data-driven sourcing with 50 years of master craftsmanship. Entering 2026, Ada Diamonds operates as a high-touch Concierge-First anchor, specializing in hand-selected, museum-quality lab diamonds that exceed the purity standards of 95% of the market. Its flagship "In-Person Experience" on Fifth Avenue in Manhattan serves as the brand's primary showroom, offering 1:1 private consultations that replace traditional retail "browsing" with curated, bespoke curation. For landlords and developers, Ada Diamonds represents an elite, credit-stable tenant that drives ultra-high-net-worth (UHNW) foot traffic and anchors the "Ethical Luxury" segment with a zero-inventory, high-margin retail model.