3.50 Carat European Cut Diamond Engagement Ring Platinum3. 50 Carat European Cut Diamond Engagement Ring Platinum. This modern engagement ring features a stunning GIA certified 3. 40 carat Old European cut diamond set in platinum. When you look at this ring it is hard to notice anything other than the mesmerizing center stone, yet there is . 06 carats of accent stones on the shoulders. The M color, VS2 clarity center stone is held by six double prongs and a rather thick crown basket. This stunning ring has