5 mm AA Heart and Arrows Cut Round Brilliant Cubic Zirconia Lever Backs Stud Earrings in 10K White Gold Classic studs with a stylish twist of lever-backs. The studs have round AA quality Cubic Zirconia securely studded in 10K gold. Cubic Zirconia is a cheaper diamond look alike; synthetically created it is durable and flawless. 30 Day No questions asked Return Policy Free-Shipping within US April Birthstone/ Birthday or Anniversary Gift