Necklaces are among some of the oldest jewelry. In the past, necklaces were worn as amulets as they were close to the hart. It was believe that holding a gem close to the heart protected you from bad energy cured sicknesses. Today, necklaces are worn more for style and fashion. An emerald necklace can be worn with a long chain for a more fashionable and elegant look or with a pearl necklace for a more casual look that you can wear with a wider range of outfits.