Circa 2021, this Antique Style 18k White Gold and Diamond Engagement Semi Mounting Three Stone Ring with Halo by Tacori features 30 round cut diamonds totaling 0.40ctw. These diamonds are G/H color and VS clarity. Center stone is a 5mm round CZ for visual representation. Finger size 6.25. Stamped 18k and Tacori inside. Weight is 3.6 grams. Thanks for looking.