Our trinity cluster studs in created Emerald are a classic. Light up your Stone collection with these gorgeous created Emerald green earrings. Solid white gold and brightcreated Emerald stones make for a a modern classic. (Pssst... created Emerald stones are perfect for loved ones with May birthdays.) EC Solid Gold Comfort Flat Back Studs will not snag clothing, pinch your skin, or tarnish. Celebrating the uniqueness of women everywhere, Estella Collection creates one-of-a-kind treasures designed to last a lifetime. Our pieces are carefully handcrafted with high-quality materials that will be treasured today and passed on as heirlooms tomorrow. Details: Stone: Lab Created created Emerald Stone Cut: Round Back Type: EC Comfort Flat Backs Flat Back Thickness:1.0mm, 18 gauge Flat Back Length: 5mm, 6.5mm, 8mm, 10mm May Birthstone Solid 14k Yellow Gold *All of our flat backs are internally threaded.