At Promise by Effy, we think “forever” has a nice ring to it, so we’ve created a curated collection of lab grown diamond engagement rings to celebrate your enduring love, carefully crafted to last a lifetime. From their chemical composition to their intense sparkle and scintillation, our affordable lab grown diamond engagement rings are 100% real, just with a different origin story. Let us help you design the lab grown engagement ring of your dreams. Customize to your heart’s content, from selecting the center stone to embellishing the band and more. Held to the highest industry standards, every Promise by Effy lab-created diamond engagement ring is obsessively handcrafted and certified by the diamond 4Cs: cut, color, clarity and carat, ensuring exceptional quality and enduring beauty. As with their mined counterparts, Promise by Effy’s lab grown diamonds are 100% unique and as individual as the wearer.