- Violine 14K Yellow Gold 1 Carat Oval Lab Diamond and Halo Open Shoulder Engagement Ring$2,300.00Total diamond weight 1.31c t-11.54%Luminance 14K Yellow Gold 1.20CTS Lab Grown Soliaire Pavé Hidden Halo Engagement RingSpecial Price $2,300.00 Regular Price $2,600.00Total diamond weight 1.61cts