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From Paris to NY.

As a Franco-American brand rooted in New York, DEMAIN blends heritage with innovation to promote cutting-edge lab-grown diamonds of impeccable origin. Our gems are ethically crafted—free from exploitation and environmental harm—embodying a new era of luxury.

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How can diamonds be elegant when mining is not?

Diamond mining is a deeply harmful practice that inflicts lasting damage on both people and the planet. It uproots communities, fuels conflict, and traps workers in poverty and exploitation. Environmentally, it leaves a trail of destruction—deforestation, polluted water, and devastated landscapes that disrupt ecosystems and contribute to climate change. The true cost of a mined diamond is one no gem should carry.

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Elite Craftsmanship

We are committed to exceptional craftsmanship, uniting time-honored techniques with contemporary innovation. As a Franco-American brand, we offer a distinctive perspective—one that respects tradition while boldly embracing the future. For us, tradition serves not as a constraint, but as a foundation for creative exploration—allowing us to push boundaries and craft jewelry that is both timeless and visionary.