The winners of JCK’s eighth annual Jewelers’ Choice Awards represent 49 pieces covering everything from bracelets to pendants, silver to platinum, and more. Plus: With your April issue, you’ll receive a “Best of the Best” supplement that showcases the 151 finalists.    Best Bridal DesignUnder $2,500Contemporary collection three-stone engagement ring with 0.38 ct. t.w. diamond-accented shank and rose gold rope detail; $2,100 (center stone not included); ArtCarved, NYC; 800-221-3232; artcarvedbridal.com$2,501–$5,00018k rose and white gold ring with 0.35 ct. t.w. round white diamonds and 0.1 ct. t.w. round pink diamonds; $4,510 (center stone not included); Simon G. Jewelry, Glendale, Calif.; 818-500-8595; simongjewelry.com$5,001–$10,000Pirouetta collection rose gold split shank engagement ring and wedding band with 0.44 ct. t.w. diamonds, milgrain edging, a