Elegant sterling silver 3/4 hoop earrings set with sparkling Cubic Zirconia. Sterling silver post and butterfly fittings. Cubic zirconia (CZ) is a synthetic stone composed of zirconium dioxide. Developed in the 1970s as a cost-effective diamond simulant, Cubic Zirconia is a common more affordable secondary birthstone for April. Hoop Diameter: 20mm Weight: 3 grams Product Code: GE259