IRENE NEUWIRTH Gemmy Gem 18-karat gold, diamond and green tourmaline necklace

Hung on an open-link chain cast in 18-karat gold (750), this Irene Neuwirth necklace from the 'Gemmy Gem' collection centers on an over ten carat tourmaline faceted into an oval. It's a stone the Los Angeles-based designer returns to often for the depth of tone it holds, and the faceting here draws that saturation up to the surface. A full-cut diamond crowns the stone and gives a point of brilliance against the deeper glow of the gem below.