Send a special birthday wish with our December Birthstone necklace. This sleek and elegant design is created using 925 Sterling Silver. With an opaque, Fresh Blue Cubic Zirconia that represents the December birthstone - Turquoise, set into a Bezel setting and sits on a Silver disc.. Turquoise is the traditional birthstone for December babies and is said to be symbolic of Success and Prosperity. Our Birthstone collection each come with an individual birthstone card that will give you the meaning and symbolism of your personal stone.. Create an extra special gift set with matching earrings and bracelet also available.