Trust us when we say that no one could resist the rich blue hue. The pretty necklace is cinched with a blue lab-grown round-shape diamond in a bezel setting. Weighing at 1/2 cttw, the stone is definitely the main charm of this classic design. Measuring at an adjustable 16 to 18-inch, the 14K white gold cable chain is secured with a lobster claw clasp.