Cosmos is an exclusive diamond jewelry brand that uses hallmarked gold and certified lab-grown diamonds. These diamonds are much more eco-friendly, sustainable, and conflict-free compared to their mined counterparts, as they save up to 1000 sqft of land, 100s of gallons of water, and countless hours of labor. Also, our diamonds are the purest in the world, and they are far superior in quality due to their great shine and brightness.