The phrase "a beautiful piece of jewelry" refers to an item that is visually appealing and crafted with care, often made from precious materials such as gold or silver. It can be a necklace, bracelet, ring, earrings, brooch or any other adornment that is considered attractive due to its design, workmanship, and quality of the material used. The phrase suggests that the jewelry is not only pleasing to look at but also has intrinsic value as a well-made piece of artistry.