By Kate Hogan
Updated December 07, 2011 09:30 PM

Her character Lisbeth Salander gets her own clothing line, but
Girl with the Dragon Tattoo
star Rooney Mara has a product of her own. The actress joined forces with Amy Walker and Maxandra Short of jewelry line Kora to create the minimalist Uweza necklace ($95), consisting of a piece of recycled cow bone wrapped in aluminum or brass. One-hundred percent of proceeds from sales of the necklace benefit the Uweza organization, which stabilizes the lives of families living in the Kibera slums of Kenya. Mara has devoted a lot of time to the non-profit, and has even visited the region she works to help. “When we were introduced to Rooney and learned about her involvement with Uweza, partnering seemed like a great way for us all to give back,” Walker tells PEOPLE. “We loved the idea of creating an eye-catching and lovely necklace out of common materials found in the community from which it came.” Find the necklaces on