Round Cut 1.5ct H-SI1 Diamond Solitaire Engagement 18k wGold Ring New GIA Cert. This is a brand new with tag diamond engagement ring, magnificent with the center stone a brilliant round cut diamond weighing 1.50 carats and is accented with smaller princess and round cut diamonds with a total weight of 2.33 carats! This high shank platform and band is crafted from solid 18k white gold. Comes with GIA certificate. Material: 18k white gold Hallmark: 750 Measurement: Top Size: 0.45" diameter x 0.37" high Solitaire Diamond: Round: 1.50 carats Color: H Clarity:SI1 GIA Smaller Round diamonds: 2.33 total carat weight Color: G-H Clarity: VS1 Ring Size: 6.5 Weight: 5.3 grams Stock#: 52018