Laboratory Diamond Jewellery › 0.30Ct Lab Diamond Emerald Cut Necklace - SQ Image 1 of 1 0.30Ct Lab Diamond Emerald Cut Necklace - SQ $1,380.00 9KT Yellow Gold Lab Diamond Necklace set with an Emerald Cut Diamond of 0.30Ct D Colour VVS2 Clarity. IGI Certified. Add To Cart Added! 9KT Yellow Gold Lab Diamond Necklace set with an Emerald Cut Diamond of 0.30Ct D Colour VVS2 Clarity. IGI Certified.