Diamond Ring Oval Solitaire Engagement Ring 18ct Yellow Gold 0.31 Carat. This 18ct Gold Solitaire 0.31 Carat Oval Diamond Ring is an absolutely stunning piece, especially when it catches the light and sparkles in full glory!! This one is perfect for those slender fingers that you know so well. Such a beautifully designed ring you just cant go wrong with it!!!!! Just take note of the way it glistens and sparkles in the light......youre sure to get a resounding YES with this one!!!!!!!!!! If you require this ring in a size other than those listed, please do not hesitate to contact us and we will do whatever we can to oblige you.