Before the environmental movement became an international cause célèbre, green was a color—a beautiful color rich with connotation (summer grass, budding trees, nature at its finest), but a color, pure and simple. Now, green has grown into a state of mind. Express solidarity with the philosophy—and look the part—by embracing the wave of green ­jewels coming to market. Featuring such gems as emerald, amethyst, peridot, tourmaline, jade, and chrysoprase, these designers offer something for every style and budget. Green mania, it seems, has only just begun.

1 (Above) Oval-shape uvarovite ring in 14k gold; $540; Melissa Joy Manning, New York City; 212-219-2194; melissajoymanning.com
2 Earrings with 12 cts. t.w. emerald and 1.37 cts. t.w. diamonds in 18k rose gold; $7,700; Atelier Minyon, New York City; 646-478-7220; atelierminyon.com
3 Necklace with 800 cts. t.w. emerald beads and platinum and diamond clasp; $300,000; Eclat, New York City; 877-325-2844; eclatjewels.com
4 Necklace with 40 x 30 and 11 mm chrysoprase on an 18-inch oval-link gold chain; $12,300; Irene Neuwirth, Los Angeles; 310-450-6063; woju@ireneneuwirth.com
5 Jade bangles with gemstones and 18k gold-plated fine silver; $365 each; Choo Yilin, Singapore; 65-94-51-1010; chooyilin.com