A timeless look, this lab-grown diamond necklace is a beautiful addition to your jewelry box. 14k gold features a row of lab-grown diamonds sparkling at the center, the largest being 1/20 ct. Each f colour/si2 clarity 2 cts. T. W. Of lab-grown diamonds 16. 0- to 18. 0-inch adjustable cable chain necklace; lobster claw clasp