SUNRISE DIAMOND ENGAGEMENT RING 18K GOLD BY MIKE NEKTA Center Diamond Color Changes. Center Diamond: Carat Weight: 10.6 Carats Color : Chameleon Color Changing Clarity: SI1 Style: OVAL BRILLIANT Ring: Metal: 18K YELLOW GOLD Style: 4 Prong Side stones Melee: 1.5 ct Size: Can be adjusted to any size