Luminesce Lab Grown Solitaire 1.5 Carat Diamond Earring Perfection! Simple enough to wear every day but delightful enough to compliment any evening outfit. Set in 14ct Yellow Gold, 4 Claw with a screw stud backing. Luminesce Lab Grown Diamonds are quickly increasing in popularity as not only do they offer a bigger, better and brighter Diamond for less, they are also the most ethical choice when selecting your next diamond.