Heron in Wetlands brooch, 2009. Sterling silver, 18k gold, mokume gane (copper and sterling silver), Australian greenstone, green sapphire. 2 1/2 in. (64 mm) high. Photo by Doug Yaple. For a profile of jewelry artisan Joan Tenenbaum and to see a gallery of her work, check out the November 2009 issue of Art Jewelry magazine.