Âme Trio 18K yellow gold ring features approximately 0.78ct. tw. princess, square emerald and trillion lab-grown diamonds. Every piece of jewelry is unique, therefore weights and measurements may slightly vary. The ring size is 6.25 (52.6). The total weight is 4.51g. 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.