All JEM creations are crafted from Fairmined certified 18-karat ethical gold. This gold, produced by small-scale artisanal mining communities, complies with the most rigorous eco-responsible standards in terms of transparency, governance, environmental protection, and social commitment. Fairmined contributes to local economic development, helps combat poverty and corruption (money laundering, financing of armed conflicts), and reduces the harmful impacts of uncontrolled artisanal mining.

JEM jewelry is crafted in France, in one of the most renowned jewelry workshops located in the heart of the Vosges region. This workshop is dedicated to the art of fine jewelry craftsmanship, committed to an innovative sustainable development policy and offering the best of its expertise to create a new style of jewelry. Each piece is handcrafted using traditional techniques: it is this irreplaceable human expertise, perpetuated by exceptional artisans and passed down from master to apprentice, that is expressed in JEM's creations.

Lab grown diamonds - or synthetic diamonds - do not come from the mine: man recreates in the laboratory the necessary conditions for their growth, then nature takes over, and it is at this moment that the magic happens: as in the heart of the Earth, the carbon crystallises, forming a rough and unique diamond. Like a fire lit, or a cultivated flower, this new diamond is the result of these magical unions, both random and controlled, of the impulse of Man helping Nature to give birth to what she already owns.