Silver Stud Earrings with Round Lab-Grown OpalOpal Stud Earrings These silver stud earrings feature round, lab grown opals. Each gemstone is held securely within a four claw setting, which allows light to interact with the stone and showcase its distinct character. The polished silver provides a cool toned frame for the opals. Being lab grown, these opals are chemically identical to those found in nature, offering a consistent and vibrant play of colour.