Laboratory Diamond Jewellery › 2.49Ct Lab Diamond Stud Earrings. IGI Certified - SQ Image 1 of 1 2.49Ct Lab Diamond Stud Earrings. IGI Certified - SQ $3,250.00 18Kt White Gold Lab Diamond Stud Earrings. Total Diamond Weight 2.49Ct G Colour SI1 Clarity. IGI Certified Add To Cart Added! 18Kt White Gold Lab Diamond Stud Earrings. Total Diamond Weight 2.49Ct G Colour SI1 Clarity. IGI Certified