- Kathéride 18 Yellow Gold 8x6MM Cushion-Cut Blue Sapphire Milgrain Diamond Halo Vintage Engraving Ring For Women$2,200.00Total diamond weight .37ct-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