Modern Engagement Rings\\nLet the simplicity of these fresh rings shine with their straightforward style\\nA wavy 18kt-white-gold band dazzles with .30 carats of diamonds. Chad Allison, $1,925 (without center stone), [chadallison.com](http://www.chadallison.com/).\\nPavé diamonds set in platinum surround a simple solitare (all totaling 1.58 carats). Van Cleef & Arpels, $31,700, [vancleef-arpels.com](http://www.vancleef-arpels.com/).\\nA platinum band holds a solitaire diamond with 100 facets from Roberto Coin's Cento Collection. Roberto Coin, prices start at $3,800 and vary based on the size of the center stone, [robertocoin.com](http://robertocoin.com/).\\nA radiant-cut diamond is set in a high step-cut crown and wide corners. Tiffany & Co., $54,000, [tiffany.com](http://www.tiffany.com/).\\nA symmetrical emerald-cut solitare is set in platinum. Cartier, price available upon request, [cartier.com](http://cartier.com/).\\nWe love the unique look of this platinum, tension setting from Gelin Abaci's Tension Collection. Gelin Abaci, $3,150 (not including center stone), [gelinabaci.com](http://gelinabaci.com/).\\nThis crossover cable pavé engagement ring sparkles with a David Yurman signature-cut diamond. David Yurman, price upon request, 212-752-4255, [davidyurman.com](http://www.davidyurman.com/).\\nA platinum band of 33 diamonds surrounds this 1.5-carat stone. De Beers, $18,500, [debeers.com](http://debeers.com/).\\nTwo rose-cut round stones weighing .11 and .23 carats are inset in a hand-textured platinum ring. Karen Karch, $6,700, [karenkarch.com](http://karenkarch.com/).\\nThis 18-kt gold \\"Tulip\\" ring includes a .34-carat center stone. Shaesby, $3,165, [shaesby.com](http://www.shaesby.com/).