A pair of Napier Sterling Silver costume jewelry earrings ear clips. The earrings are made in an openwork scrollwork design. Marked with a Sterling Silver hallmark, and a Napier Sterling Pat. Pend mark. Weight: 18 g. One of the most famous costume jewelry brands in fashion history, Napier jewelry graced the wrists, necks, and earlobes of movie stars like Marilyn Monroe and Grace Kelley. While most of the company's offerings were gold-plated or made of other metals like sterling silver, a few pieces were made of real gold. Vintage and Modern Costume Jewelry Wares and Accessories For Collectors.