1.00 ctw Oval Cut Lab Grown VS2 E Solitaire IGI Graded 14KT Gold Engagement Ring. This ring is a size 5. This is a lab grown diamond that has been graded by IGI, the IGI report number LG444086875 is laser inscribed on the gridle. The lab grown diamond has a 1.00 carat weight with a VS2 clarity and an E color.