David Webb carved jade, ruby and diamond Dreamer Necklace in hammered 18-karat gold and platinum. Price on request, (212) 421-3030.Still life by Anthony Cotsifas. Retouching: Anonymous Retouch.

Setting gems within gems, Boghossian pushes the boundaries of contemporary design. It requires tremendous precision, steady hands, and a degree of bravery to set an exceptional 7-carat pear-shaped ...