Jewelry & Diamond Industry Dictionary of Terminology
Personal ornaments, such as necklaces, rings, or bracelets, that are typically made from or contain jewels and precious metal.
"jewellery" is the British spelling of the word. As an American company, Walt's Jewelers proudly uses the American spelling.
Sources for these definitions are GIA.edu, Google.com, Meriam-Webster.com, and Wikipedia.org.