1 Carat Old Mine Diamond Solitaire Engagement Ring in Rose Gold.  This modern engagement ring is simple, sleek and classic. At the center is a brilliant 1.41 carat old mine cut diamond elegantly set with four (4) prongs. The 14k rose gold adds a special touch and the additional sixteen (16) diamonds which are also mine cut embellish the shoulders offering an added taste of dazzling sparkle to set off the center stone beautifully.