Halo Diamond Stud Earrings Fancy Blue Real Diamond Round Cut Weight 1.00 Cts . These Gorgeous Halo Earrings Are a Classic And Timeless Design That Will be Treasured for Years to Come. This Halo Earring has a White Diamonds 0.40 Cts . The setting is available in 18K white gold. These are Screw Back which Means that you will Never have to Lose one and can keep them on Always..