From colored center stones to this year's hottest diamond shape (ovals!), these uncommonly beautiful wedding jewels are sure to please even your choosiest clients   Alternative (L–R) Tourmaline Hex Ballerina ring with 1.24 ct. tourmaline and 1.12 cts. t.w. diamonds in 14k yellow gold; starting at $8,500; Marrow; info@marrowfine.com; marrowfine.com Selena ring with 0.79 ct. color-change sapphire and 0.135 ct. t.w. brilliant-cut white diamonds in 14k yellow gold; $2,295; Valerie Madison; hello@valeriemadison.com; valeriemadison.com Amaryllis ring with cushion-cut purplish-pink tourmaline and white diamonds in 14k yellow gold; $1,950; Vale Jewelry; info@shopvale.com; shopvale.com Ring with 2.7 ct. gray-blue sapphire and 0.78 ct. t.w. round brilliant diamonds in 14k white gold; $3,350; Sheryl Jones Jewels; 917-208-4355; sheryljonesjewels.com Asymmetrical cluster ring with lotu