Red Balloon The String Project Necklace - Yellow GoldMarla aaron the string project necklace in yellow gold. Marla Aaron made The String Project for you to have (even more) fun with your Locks. For years they have been looking for something like this strong, durable, colorfulfor more play. Ultimately they had to have it made for us because there was nothing quite like it out in the world. The String Project is finished with sterling silver loops. The string is made with Dyneema, the worlds strongest