GREEN TREASURE

Thea Grant's one-ofa-kind pieces hang from antique chains or bands. The wearable objets d'art are created from found or recycled materials culled from markets around the country (theagrant .com).

Russell and Kimora Lee Simmons's Green Bracelet holds a conflict-free diamond. Profits from sales go to DEF, which supports education in African communities (simmonsjewelryco .com).

Toby Pomeroy designs jewelry with EcoGold or EcoSilver, acquired from recycled metal. His signature style of forging the metals by hand ensures minimal environmental impact (tobypomeroy.com).

Costa Rica's lush rain forests have inspired Alex Woo's Vida Collection. Ten percent of the proceeds from each piece goes to support the N.R.D.C.'s clean-air efforts (alexwoo.com).

John Hardy's commitment to sustainable luxury is evident in both his lifestyle and his Balinese-inspired jewelry. He plants bamboo to offset the eco-impact of his ad pages (johnhardy.com).