18ct w cushion 0.3ct lab dia halo + adjustable chain

A cushion-style lab-grown diamond halo pendant crafted in 18ct white gold and supplied with an adjustable chain. The current record lists a 0.3ct lab-grown diamond, 16 halo diamonds measuring approximately 1.3mm and an 18ct white gold chain weighing around 2.1 grams. Confirm grading and certification before publishing.