Turquoise and Tanzanite are the birthstones for December. I'd like to focus on Turquoise, a stone that looks great on just about everyone and looks just as fabulous in the winter as it does in the summer. Here are some ideas:
blue valentine. turquoise heart. tassel chain. very long antique brass chain necklace. Turquoise - December Birthstone. Seen at http://www.etsy.com/shop/feelgoodjewelry