MIKA MARQUISE CUT HALO DIAMOND ENGAGEMENT RING in 18K WHITE GOLD BY MIKE NEKTA CERTIFIED Center Diamond: Carat Weight: 1.6 Carats Color : H Clarity: SI3 Style: MARQUISE CUT Measurements: 12.7 x 6.1 x 3.5 mm Ring: Metal: 18K WHITE GOLD Style: HALO, SIDESTONE RING Metal Weight: 10.18 GR Diamonds: 2.17 carats Size: Can be adjusted to any size.