Laboratory Diamond Jewellery › 0.81Ct Lab DIamond Ring - SQ3213961 0.81Ct Lab DIamond Ring - SQ3213961 $3,220.00 18Kt Yellow Gold Lab Diamond Ring set with a total of 0.81Ct of DEF Colour VS Clarity Lab DIamonds. Add To Cart Added! 18Kt Yellow Gold Lab Diamond Ring set with a total of 0.81Ct of DEF Colour VS Clarity Lab DIamonds.