Show-stopping sparkle and luxury are the perfect words to describe this ethical lab grown diamond engagement ring in heirloom gold. The centre stone is certified at G/VS1 grade by IGI, so you can propose with absolute confidence knowing your diamond is of a high quality grade. A truly magnificent ring that will impress and delight. 1.50ct IGI Certified Centre Stone - Excellent Cut-Polish-Symmetry. *The sustainable luxury choice. Lab-grown diamonds are chemically and optically identical in brilliance and beauty to a natural mined diamond.