Tresorra Diamond Necklace $15,000 MSRP Cushion Shape Triple Halo Necklace 18K Yellow Gold. Center Stone: Diamond Weight: 055-0.65 Tcw Quality: GH SI1-2 Side Stones: Diamonds Weight: 0.50 Tcw. Quality: GH VS-SI Measurements: 20.5mm X 18mm Setting: Signature pave setting. Chain: 18" Long 18K Yellow Gold Style: 166-YG-DIA