Âme Q 18K yellow gold pendant necklace features approximately 1.06ct. tw. round-brilliant lab-grown diamonds. Every piece of jewelry is unique, therefore weights and measurements may slightly vary. The length is adjustable from 18" - 20". The total weight is 4.05g.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.