Just as in fashion, jewelry trends (unique shapes! colored stones! new metals!) come and go. For an engagement ring you'll love as much 10 years from now as you do today, opt for a traditional diamond cut and fuss-free design that will never go out of style.

Platinum Classic Solitaire engagement ring with oval-cut diamond center stone, price upon request, De Beers

See more oval-cut engagement rings. Photo: Courtesy of De Beers