Laboratory Diamond Jewellery › 1.21Ct White Lab Diamond Studs - IGI Certified - SQ4599956 Image 1 of 1 1.21Ct White Lab Diamond Studs - IGI Certified - SQ4599956 $2,200.00 sold out 18Kt White Gold Lab Diamond Studs. Total Diamond Weight 1.21Cts. D Colour SI1 Clarity. IGI Certified Sold Out Added! 18Kt White Gold Lab Diamond Studs. Total Diamond Weight 1.21Cts. D Colour SI1 Clarity. IGI Certified