Round diamond semi mount engagement ring, 1 CT center, 6.2 mm to 6.5 mm. 0.20 CT total sides. 40 round diamonds, G-H color, SI1 clarity. Sidestones are set in 2 rows, 4 prongs each. 4 prong setting for the center stone. Band is about 3.2 mm wide and 2 mm thick. Ring weighs about 4.8 grams or 3.1 dwt in a size 6.5. Center stone diamond is not included. This ring can ship set with a cubic zirconia center stone.