18K gold jewelry is made from an alloy that contains 75% pure gold and 25% other metals, such as copper or silver. This combination enhances the durability and strength of the jewelry while maintaining a rich, warm color. The "18K" designation indicates the gold's purity, making it a popular choice for high-quality pieces. Due to its balance of beauty and resilience, 18K gold jewelry is often used in various types of accessories, including rings, necklaces, and bracelets. It is less prone to tarnishing compared to lower karat gold, making it a favored option for everyday wear.