Dazzled with 11.00 ct. t.w. round brilliant-cut lab-grown diamonds, our superb tennis necklace delivers glamorous, end-to-end sparkle at an … Dazzled with 11.00 ct. t.w. round brilliant-cut lab-grown diamonds, our superb tennis necklace delivers glamorous, end-to-end sparkle at an exceptional value. Finely crafted in polished 14kt white gold. Lab-grown diamonds are identical to mined diamonds according to their optical, physical and chemical properties. This item includes a report from the International Gemological Institute to verify color, clarity and carat weight. Single-latch safety. Push-button clasp, lab-grown diamond tennis necklace.