Handcrafted Traditional Four Stone Design. Lab- Grown Diamonds are graded to the 4C's criteria of; Colour, Clarity, Cut & Carat Weight, as with our Natural Diamonds. Colour superior or equal to F. Clarity superior or equal to VS. Our Lab-Grown Diamonds of 0.50ct and over are independently certified by GIA, HRD or IGI. Handmade in Ireland.