Âme Trio 18K white gold stud earrings feature approximately 0.50ct. tw. princess-cut lab-grown diamonds. Every piece of jewelry is unique, therefore weights and measurements may slightly vary. The dimensions of the earrings are 7/8" x 9/16". The total weight is 4.18g.Lab-grown diamonds have the same chemical, physical and optical characteristics as mined diamonds, but are grown above-ground rather than under. Learn more about lab-grown diamonds here.