Platinum Diamond Engagement Rings - These timeless platinum engagement ring designs are yours to customize and make your own here at KODEGA. Choose from classic Princess-cut or Round-cut Solitaire or Trilogy settings in the extremely rare Platinum 950 alloy ring. Looking for something a little different? Try a Fancy-cut diamond; these come in Marquise, Emerald, Oval, Pear, Heart, Cushion, and Asscher cuts. If you want a little more color for that platinum engagement ring view our selection of Platinum Gemstone Engagement Rings, also known as Colored stone Platinum Engagement Rings.