Old Mine Cut Diamond 3.02 CT Center With Unique Halo Engagement Ring is made of 18k white gold and weighs 5.9 DWT (approx. 9.18 grams). It contains one old mine cut I, VS2 clarity diamond weighing 3.02 CT, round G, VS clarity diamonds weighing 0.80 CTTW, tapered baguette G, and VS clarity diamonds weighing 1.30 CTTW.