A single oval lab grown diamond four claw set in a 18ct yellow gold ring mount with a hidden diamond set halo under the head. 1.00ct oval lab grown diamond, IGI certificated D colour, VVS2 clarity. 0.07ct total other diamond weight. A lab grown diamond is a real diamond that is grown in a laboratory rather than naturally within the Earth's core, it has the same chemical and physical structure as a natural diamond. The main difference between lab grown and natural diamonds is the origin and rarity. To find out more information about lab grown diamonds please read our blog.