The Reversible Diamond Omega is a jewelry essential for every women's jewelry wardrobe because it can be worn by itself with clean simple lines but also can be layered with different necklaces for a more modern look.  The Diamond Omega is Gold on one side and .925 Sterling Silver on the other. There is a real diamond in the clasp and you can choose 16, 18, or 20 inch length. It also comes with a Sterling Silver 6ct Northern Lights Quartz Pendant at no extra cost.