Vintage costume jewelry refers to decorative accessories that were popular from the early 20th century through the mid-20th century. Unlike fine jewelry, which is made of precious metals and gemstones, costume jewelry is crafted from less expensive materials like glass, plastic, enamel, and base metals. Despite its lower cost, vintage costume jewelry often exhibits intricate designs and craftsmanship, mimicking the styles of more expensive pieces. It gained prominence during periods like the Art Deco and Mid-Century Modern eras, with iconic designers creating unique, stylish pieces. Today, collectors and enthusiasts appreciate it for its historical significance, unique designs, and affordability.