Laboratory Diamond Jewellery › 1.40Ct Lab Grown Diamond Studs - SQ1979954 Image 1 of 1 1.40Ct Lab Grown Diamond Studs - SQ1979954 $3,700.00 sold out 1.40Ct Total Weight Lab Grown Diamond Studs. Set in 18kt White Gold. E Colour SI2. IGI Certified. Sold Out Added! 1.40Ct Total Weight Lab Grown Diamond Studs. Set in 18kt White Gold. E Colour SI2. IGI Certified.