The Brazilian designer Yael Sonia is releasing her first-ever men’s jewelry line comprising 26 pieces in both silver and 18-karat gold. Inspired by the fluidity of modern architecture, the whimsical designs are made from such custom-cut gems as onyx, quartz, and diamonds. Incorporating bold, masculine motifs with playful geometric shapes, the jewelry can be custom-made to incorporate a variety of stones in settings of yellow gold or sterling-silver casting. The one-of-a-kind cuffs, bracelets, rings, and neckla…