Laboratory Diamond Jewellery › 1.03Ct Radiant Cut Lab Diamond Ring - SQ6546552 Image 1 of 1 1.03Ct Radiant Cut Lab Diamond Ring - SQ6546552 $3,990.00 18Kt White Gold Radiant Cut Laboratory Diamond Ring. Total Diamond Weight 1.03Ct. IGI Certified G SI1. Finger Size N. Add To Cart Added! 18Kt White Gold Radiant Cut Laboratory Diamond Ring. Total Diamond Weight 1.03Ct. IGI Certified G SI1. Finger Size N.