NANA Jewels Lab CVD Diamond Cluster Center Engagment Ring. Crafted with solid 10kt Gold, it is available in White, Yellow or Rose Gold. It is available with a 6.5mm, 7.5mm or 8.0mm round cluster head center. Your choice of finger sizes from 5 to 10, including half sizes. The 6.5mm Cluster head is set with 9 Lab/CVD Diamonds totaling approx. 0.28ctw. There are 16 Lab/CVD Diamonds on the shank totaling approx. 0.16ctw. The total weight of the 6.5mm Cluster Engagement ring is approx. 0.44ctw.