Lafonn Amethyst February Birthstone Halo Stud EarringsThese Lafonn amethyst birthstone halo stud earrings bring a rich purple hue to your jewelry collection. Each earring features a genuine round cut amethyst gemstone measuring 5mm and totaling approximately 0. 92 carats. The deep violet stones are surrounded by a halo of Lafonn signature Lassaire simulated diamonds that add a bright contrast. These simulated diamonds total approximately 0. 34 carats, bringing the total weight of the pair to 1. 26